ARLINGTON, Texas -- The Texas Rangers on Friday declined the $18 million contract option on right-hander Corey Kluber, who lasted just one inning in his only start before a shoulder injury ended his season.

Kluber gets a $1 million buyout, and the club has said it is interested in re-signing him to a less expensive deal.

The Rangers acquired the two-time Cy Young Award winner from Cleveland last offseason in exchange for hard-throwing reliever Emmanuel Clase, who was suspended 80 games after testing positive for a banned performance-enhancing substance.

Kluber threw 18 pitches in his only inning for the Rangers, leaving with shoulder tightness in a 5-2 loss to Colorado in the third game of the season. The 34-year-old was diagnosed with a small tear in his shoulder muscle the next day.

It was Kluber's first appearance with a team other than Cleveland, and his first start in almost 15 months after his right forearm was broken by a line drive in what ended up being his final start for the Indians on May 1, 2019. Kluber was close to returning later that season when an oblique injury sidelined him again.

Kluber's five-year run as an Opening Day starter ended this past season. He was 98-58 with a 3.16 ERA for Cleveland and pitched at least 200 innings five straight seasons before breaking his forearm.

The Rangers planned to have Lance Lynn, Mike Minor and Kluber as their top three starters this past season. Lynn is all that remains for now. Texas hung on to its best pitcher despite being out of contention at the trading deadline in the pandemic-shortened season. Minor was traded to Oakland for two minor leaguers.

Texas also assigned right-hander Luke Farrell to the minor leagues, and right-handed reliever Ian Gibaut was sent to Minnesota on a waiver claim.