Right-hander Mitch Keller and the Pittsburgh Pirates are in agreement on a five-year, $77 million contract extension, sources tell ESPN, locking up another young core player as the team continues to try to return to the postseason for the first time in nearly a decade.

Keller, 27, had a breakout 2023 season in which he was an All-Star for the first time and struck out 210 in a career-high 194⅓ innings, anchoring a rotation in which he soon could be joined by Paul Skenes, the No. 1 pick in last year's draft.