MELBOURNE, Australia -- Olympic champion Qinwen Zheng won't be repeating her surprising run to the Australian Open final in 2025 after a second-round upset loss to No. 97-ranked Laura Siegemund on Wednesday.

Zheng lost the 2024 championship match at Melbourne Park to Aryna Sabalenka and went on to win the Olympic gold medal in Paris and finish runner-up at the WTA Finals in a breakout season.

But her first tournament of the year ended in a 7-6 (3), 6-3 loss on John Cain Arena against 36-year-old Siegemund, who played aggressively from the first point and put Zheng off her game.

At 36, Siegemund is the third-oldest player to beat a WTA top-five player at the Australian Open in the past 30 years. The only one older: Serena Williams, who did so at 39 years old in 2021 (defeated No. 2 Simona Halep) and as a 37-year-old in 2019 (defeated No. 1 Halep).

Sabalenka, the two-time defending champion, extended her run to 16 wins at Melbourne Park by winning the last five games to beat No. 54-ranked Jessica Bouzas Maneiro 6-3, 7-5.

The score line didn't indicate the difficulty of the match, with Bouzas Maneiro taking huge swipes at the ball in her Australian Open debut and dictating some of the points against the world No. 1-ranked player. Her serve let her down, with Sabalenka able to relieve some pressure on her own serve with five breaks.

No. 7 Jessica Pegula had a 6-4, 6-2 win over Elise Mertens to reach the third round, along with Belinda Bencic and No. 23 Magdalena Frech.

Siegemund has never been past the third round in Australia, but is taking confidence from her big upset. Her only lapse was when she was broken serving for the first set. She recovered to dominate the tiebreaker, while Zheng remained too conservative in her tactics until right near the end.

"I knew I just had to play more than my best test. I had nothing to lose. I just told myself to swing free," Siegemund said. Zheng is "an amazing player. One of the best players right now, but I know I can play well and I wanted to show that to myself."

Siegemund became the first unseeded German woman to defeat a top-five seed at the Australian Open since 2003, when Marlene Weingartner ousted Jennifer Capriati in the opening round.

ESPN Research and The Associated Press contributed to this report.

PALM BEACH GARDENS, Fla. -- Tiger Woods was the sixth and final player to emerge from the tunnel and onto the field of play for his TGL debut Tuesday night.

No one announced his name. Wasn't necessary.

Survivor's "Eye of the Tiger" blared and that was more than enough of an introduction for perhaps golf's greatest player. It's not like anyone inside SoFi Center at Palm Beach State College didn't know who Woods was, and most were even probably aware of how he, Rory McIlroy and others spent years trying to make this notion of indoor golf on TV happen.

"It is a reality now," Woods said.

Week 2 of TGL was Tuesday night -- Woods joined Kevin Kisner and Max Homa of Jupiter Links Golf Club to take on the Los Angeles Golf Club of Justin Rose, Collin Morikawa and Sahith Theegala.

The final score: Los Angeles 12, Jupiter 1 in the 15-hole, made-for-TV team match featuring nine holes of alternate shot triples play, followed by six holes of singles play -- two holes for each player on each team. Woods was smiling throughout, even with the lopsided score. The format is such that he only took 20 shots over the course of the match, which lasted just over 2 hours.

Woods' team got itself on the wrong side of the scoreboard quickly, getting down 5-0. It could have been worse if Woods hadn't made an 8-footer for par to help his team get a tie on the fifth hole. That putt came one hole after Woods slid a 7-footer wide to the left.

"It's about time, Tiger," tennis legend Serena Williams said on the ESPN broadcast. Williams is a longtime friend of Woods, so she found herself rooting for him -- and she is part of the ownership group of the Los Angeles Golf Club, so she found herself simultaneously rooting against him.

There were vintage Woods moments, like staring down shots he liked as the super-high-tech videoboards told the tale of where the ball would have gone outdoors. There were also frustrating ones; he shook his head after he sent a 101-yard wedge into the water on the second hole of the 15-hole match -- as son Charlie, sitting in one of the seats in the arena overlooking the course, couldn't help but laugh.

Williams sat in the Los Angeles box just to the right of the players' teeing areas, enjoying the spectacle of the walk-out introductions, light and smoke shows and booming music.

"It's so wild," Williams said. "It's something that you see a little bit in tennis. We see it all the time in basketball, right? We don't really see it so much in golf. Actually, we never see that in golf. It's so good to kind of see their personalities and see them shine as golfers. ... It's so cool to see a new aspect."

PITTSBURGH -- Mike Tomlin has a message for any team considering inquiring with the Steelers about his availability in a potential trade.

"Save your time," the head coach said Tuesday in his season-ending news conference.

After the Steelers' fifth consecutive one-and-done trip to the playoffs, Tomlin's job status and future with the organization has been a hot topic of debate and source of consternation among fans. Tomlin, who signed a three-year extension last offseason and just completed his 18th season at the helm, said he understands their frustration.

"I understand the nature of what it is that we do, the attention and criticism that comes with it," he said. "As a matter of fact, I embrace it, to be quite honest with you. I enjoy the urgency that comes with what I do and what we do.

"I don't make excuses for failure. I own it, but I also feel like I'm capable and so as long as I'm afforded an opportunity to do that, I will continue, but I certainly understand their frustrations and probably more importantly than that, I share it because that's how I'm wired."

Tomlin expressed his disappointment with the way the season ended throughout his final news conference, but he admitted that the five-game slide to end the season, capped with a 28-14 wild-card loss to the Ravens was "football justice."

"I don't view it as misfortune, to be quite honest with you," Tomlin said. "Particularly at this level in this business and game, there's football justice. You get what you deserve, and so we are here and we're here for really tangible reasons. We didn't involve in the right ways. We didn't strike the right chords at the right time, particularly down the stretch."

Tomlin said there would be "changes" in the organization, but he didn't detail specifics, saying the postseason debrief was in its infancy. He met with his players as a group Monday and also began individual exit meetings. He also met with owner Art Rooney II and general manager Omar Khan.

"Certainly, there's change that comes when we don't have the desired outcome, and so those are just the realities of the business," Tomlin said. "I would imagine there's going to be some things that change around here on a lot of levels, but that's this game as I've mentioned, and so I understand that. I'm open to that really just beginning the processes of some of the decision-making that has to transpire."

Among the potential changes is the makeup of the quarterback room. Both Russell Wilson and Justin Fields are on expiring contracts, and the team signed quarterback Skylar Thompson on Tuesday afternoon, Thompson's agency announced on social media. Thompson, selected by the Miami Dolphins in the seventh round of the 2022 NFL draft, appeared in 10 games for Miami with three starts over two seasons and had one touchdown and three interceptions.

Wilson said Monday "the plan" is to be in Pittsburgh in 2025, but he later admitted he hasn't met with the Steelers yet to begin those discussions.

Tomlin said he believes both Wilson and Fields can help the Steelers take the next step in getting to where the organization wants to go.

"Just their professionalism, approach to business, their relationship with the game was an encouragement in that regard," Tomlin said explaining his belief.

Tomlin also said he had belief in Fields, who went 4-2 in six starts to open the season, to be a 17-game starter if Wilson ultimately opts to depart in free agency.

"I thought that the way that he managed his professional circumstance was really impressive," Tomlin said. "I thought he brought an urgency to his day-to-day work regardless of his role. I thought he got continually better within our system of ball throughout the process. I thought the way he conducted himself makes that a legitimate thought or idea at this juncture."

And though he said he doesn't believe the organization is stuck despite six playoff losses in eight years, Tomlin also didn't go out of his way to offer hope and optimism about the future.

"I'm certainly disappointed that I'm not working to prepare to play this week," he said. "And I've certainly felt that in recent years, but stuck is kind of a helpless feeling, and I don't know that I feel helpless."

He added: "I don't know that I'm ready to be overly optimistic or sell optimism to you either. I'm just acknowledging what transpired and what has to happen and what is beginning to happen and acknowledging the complexity and the amount of work that's ahead of us. Certainly feel capable, but definitely don't feel in the mood for optimism or the selling of optimism. I don't know that that's appropriate. It is disappointing not to be working and so that's where we are."

DALLAS -- Dallas Mavericks star Kyrie Irving returned for Tuesday night's home game against the Denver Nuggets.

Irving, who is averaging 24.3 points and 4.9 assists per game this season, was sidelined the past week because of a lower back injury.

The Mavs went 2-3 during the five games that Irving missed.

Irving was listed as out due to illness for the Mavs' Jan. 3 loss to the Cleveland Cavaliers. The team announced before the next game that he had a lumbar sprain in his lower back.

Sources told ESPN's Shams Charania that Irving has been dealing with a bulging disk in his lower back.

Mavs co-star Luka Doncic has been sidelined since straining his left calf during a Christmas loss to the Minnesota Timberwolves. He is scheduled to be reevaluated the last week of January.

SEATTLE -- The Seattle Mariners acquired infielder Miles Mastrobuoni from the Chicago Cubs on Tuesday for cash.

Mastrobuoni, 29, hit .194 with four RBIs in 50 games for Chicago last year. He can play second base, third, shortstop and the corner outfield spots.

Mastrobuoni was designated for assignment when Chicago acquired reliever Matt Festa on Thursday.

Seattle designated catcher Nick Raposo for assignment to make room for Mastrobuoni on its 40-man roster. Raposo, 26, was claimed off waivers by the Mariners from Toronto on Dec. 19.

Mastrobuoni made his big league debut with Tampa Bay in 2022. He is a .219 hitter with one homer, nine RBIs and 16 steals in 118 major league games.

Getting the call-up as a lucky loser means a second chance for tennis players - but it can often prove a stressful experience.

Lucky losers are players who lose in qualifying at a tournament, but receive a place in the main draw if another player withdraws through injury or illness.

Four players have received lucky loser entries into the men's and women's singles draws at the Australian Open.

Three of them - including Britain's Harriet Dart - have claimed first-round wins.

But being told you are in the draw, sometimes just minutes before you are due on court, is far from ideal.

"You never really know what's going to happen with being the first lucky loser," said British number four Dart, who was given one hour's notice before her three-set win.

Dart, who battled cramp and saved match points in her victory, said: "I got here pretty early, practised, and was fortunate enough to be able to play.

"When you get a chance, you really want to take it, and I was really happy to get over the line."

Another victorious lucky loser was Eva Lys, who was lying on a physio table receiving treatment when she was summoned.

The world number 128, who was given 10 minutes' notice, beat Australian number one Kimberly Birrel 6-2 6-2, but admitted she was "panicking" over the lack of preparation.

"I actually had my flight back booked for tomorrow morning," Germany's Lys, 23, said.

"I didn't really prepare my drinks, I didn't have match clothes on. I went to the locker room, got changed straight away, and then they called my name.

"So no warm-up, no anything. Maybe that's the key for next match."

On the lucky loser experience, she added: "If you are a lucky loser, you don't expect much. Your tournament is kind of over.

"But a lot of people gave me hope that there was a possibility for me to get in. That's why I was here the whole day, from 9am until 11pm, because you never know if someone is going to pull out.

"I went out and had no expectations. I was definitely the lucky one."

Fonseca was ranked 730th in the world at the start of 2024, but by the end of the year he had surged up the rankings into the top 150.

He captured tennis fans' attention with quarter-final runs at the ATP 500 event in his home city of Rio de Janeiro and at the ATP 250 in Bucharest.

The teenager truly established himself as one of the best newcomers by winning December's Next Gen ATP Finals - an event for the best male players aged 21 and under.

Current world number one Jannik Sinner, who won the tournament in 2019, is the only player to have lifted the title at a younger age than Fonseca.

In fact, it was Sinner who convinced Fonseca to turn professional when he was a hitting partner for the Italian at the 2023 ATP Finals.

Fonseca's showing against Rublev proved his potential, as he took charge with his powerful forehand and fired home 51 winners to the Russian's 33.

"I just enjoyed every moment on this amazing court, it's my first time playing in a huge stadium," Fonseca said.

Fonseca is just the second teenager since 1973 to beat a top-10 opponent at their maiden Grand Slam, after Mario Ancic beat Roger Federer at Wimbledon in 2002.

Asked in his on-court interview how much money it would cost to have his talent, Fonseca referenced 20-time major winner Federer, replying: "Like Roger said, talent is not enough without hard work.

"My idol was always Roger, I grew up watching Roger. Everyone wanted to play like him and I even tried when I was younger the one-handed [backhand] for one week."

Fonseca will meet Italy's Lorenzo Sonego, who is ranked 57 places higher, in the second round on Thursday.

"Of course my expectations are bigger now," Fonseca said. "I want more and more, I think that is the mentality of champions."

When I was a child, tennis was nowhere near as big in Italy as it is now.

Football has always been the number one sport in our country - people live for it.

Now tennis is not far behind catching up with football in popularity.

The amount of attention I received started to increase a lot after I reached the French Open singles final last year and again after I did the same at Wimbledon.

But I felt the biggest difference after I won a gold medal for Italy in the Olympic doubles.

It was crazy when I returned to Italy after Paris. The attention meant I couldn't go out! No, I'm joking with you, but it was intense.

So many people were coming up and saying something about the gold medal when I was out in the street.

I felt it was not just tennis fans who were recognising me now.

When I reached the Roland Garros and Wimbledon finals, it was more tennis fans who were stopping me for a picture, but the gold medal was something more global.

I haven't needed to hire a security guard yet, though!

Sometime people shake my hand or sometimes they hug me and say "please, I want to give you a kiss".

Older women in their 60s and 70s, they're the ones who come up and say they love me.