Former Cy Young Award winner Dallas Keuchel saw a little bit of Achilles soreness develop into a right calf strain shortly after covering first base Saturday night while pitching for the Minnesota Twins.

The 35-year-old left-hander was placed on the 15-day injured list Sunday before the playoff-bound Twins finished the regular season against the Colorado Rockies. Keuchel said he is slated for an MRI on Monday.