Greinke signed a one-year, $13 million contract with the Royals on Wednesday, Ken Rosenthal of The Athletic reports.
Greinke began his major-league career with the Royals in 2005, and he'll return to the organization after spending two and a half years with the Astros. He made 30 appearances (29 starts) for Houston in 2021 and logged a 4.16 ERA and 1.17 WHIP in 171 innings. The Royals traded Mike Minor to the Reds on Wednesday, and Greinke figures to fill a prominent role in the team's starting rotation.