After playing three of their starters 40-plus minutes and fighting for their playoff survival, the Toronto Raptors were staring a 3-0 deficit to the Boston Celtics in the face and were down to their final second. Make that a half-second.

Kemba Walker, who finished the game with 29 points, thought he had iced the game for the Celtics with an assist after finding a cutting Daniel Theis for a go-ahead dunk, leaving just 0.5 seconds on the clock and giving Boston a two-point lead.

Coach Nick Nurse put the ball into his All-Star point guard's hands, as Kyle Lowry had the daunting task of finding someone open with 7-foot-5 Tacko Fall guarding the inbounds play.

Somehow, Lowry found OG Anunoby open in the far corner, and the Raptors forward hit the franchise's first buzzer-beater since Kawhi Leonard's memorable series-clinching buzzer-beater to eliminate the Philadelphia 76ers in the 2019 playoffs.

WHAT A PASS. WHAT A SHOT.

OG Anunoby's #TissotBuzzerBeater through the lens of our slo-mo #PhantomCam! #ThisIsYourTime#NBAPlayoffs #WeTheNorth pic.twitter.com/jhwCqNmzLe

— NBA (@NBA) September 4, 2020

The league's stars took to Twitter to react to Anunoby's thrilling winner and the Raptors' 104-103 win over the Celtics to keep.

WOW!!!!! BALL GAME!!!!!!

— Trae Young (@TheTraeYoung) September 4, 2020

OG!!!!! BIG TIME!!!!

— Victor Oladipo (@VicOladipo) September 4, 2020

OG!!!

— Donovan Mitchell (@spidadmitchell) September 4, 2020

OG THATS HOW YOU FEEL???

— Josh Okogie (@CallMe_NonStop) September 4, 2020

Yoooo Basketball is just great!

— Bismack Biyombo (@bismackbiyombo) September 4, 2020

CJ McCollum noted how the Oklahoma City Thunder squandered a similar situation Wednesday night in their Game 7 loss to the Houston Rockets.

Same situation as last night with less time . Different inbound play. Different result

— CJ McCollum (@CJMcCollum) September 4, 2020

Crazy he got the shot off with .5 seconds and Kyle made a pass over an ultra footer . Wild wild wild wild game

— CJ McCollum (@CJMcCollum) September 4, 2020

Also, as Kyle Lowry said, that wasn't the play. It was an improv in the moment, and an unbelievably gutsy one at that. So it's easy to clown on OKC for not doing that, but that was just a great vet player making a smart play.

— Royce Young (@royceyoung) September 4, 2020

Who was the happiest person in the bubble aside from Anunoby? That would be Lowry.

I aspire to smile as big as Kyle Lowry just did lol

— Spencer Dinwiddie (@SDinwiddie_25) September 4, 2020

Try not to smile looking at this photo.... pic.twitter.com/5rRb7qOPQa

— Cassidy Hubbarth (@CassidyHubbarth) September 4, 2020

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