HOUSTON -- Houston Astros ace Justin Verlander has been placed on the injured list with a right calf injury.

The team announced the move Tuesday and said that an MRI on the calf Monday revealed fascial disruption but no muscle fiber disruption.

Verlander's stint on the injured list is retroactive to Monday. He was injured in his start Sunday while going to cover first base during a rundown in the third inning against the Orioles.

The right-hander, a leading candidate for the AL Cy Young Award, lowered his major-league-leading ERA to 1.84 by throwing three scoreless innings before his exit Sunday.

The 39-year-old Verlander returned this season after missing almost two seasons following Tommy John surgery. Entering Sunday's matchup with the Orioles, he was 8-0 with a 1.35 ERA in his past 10 starts.

Verlander's 16 wins are tied with Atlanta's Kyle Wright and Los Angeles Dodgers right-hander Tony Gonsolin for most in the majors.

Also on Tuesday, Houston recalled right-hander Brandon Bielak from Triple-A Sugar Land and optioned outfielder Jake Meyers there. The Astros also recalled utility player J.J. Matijevic from Sugar Land and added right-hander Hunter Brown to the taxi squad from Sugar Land.