The 2015 AL Cy Young Award winner was supposed to pitch Saturday for Triple-A Gwinnett against Durham, but the game never began because of the weather. More rain was in the forecast Sunday.
Instead, Keuchel is likely to pitch Monday for Class A Rome in the South Atlantic League. The 31-year-old lefty is expected to throw 75 to 90 pitches.
Keuchel signed a one-year deal this week that pays him $13 million. The two-time All-Star went 12-11 with a 3.74 ERA in 34 starts last season for Houston.