ARLINGTON -- Astros starter Jake Odorizzi was placed on the 10-day injured list Tuesday after suffering a right foot injury while making a play at first base in Monday’s win over the Rangers. The right-hander, a 10-year veteran in his first season with Houston, stepped hard on the bag while fielding a second-inning throw and was removed from the game with right foot soreness.

Odorizzi’s spot on the roster was filled by Tuesday’s starter, Zack Greinke, who had been on the 10-day IL due to a positive COVID-19 test. Odorizzi was set to undergo an MRI before Tuesday’s game, manager Dusty Baker said.

It wasn’t immediately apparent what had happened to Odorizzi, as neither TV replays nor the pitcher’s body language showed obvious signs of a problem.

“We couldn’t tell ... we were shocked when he called us out [to the mound],” Baker said Tuesday. “A lot of times, you really can’t tell when a guy hurts something, especially when it comes in the areas where you have a lot of bones in, namely your hands and feet. You don’t have to do much to injure them.”

Odorizzi tested the foot by throwing a couple of pitches during a timeout with trainers and coaches gathered near the mound.

“When he threw the first pitch and we saw him grimace, and then he threw the second pitch and right away, he knew that something was wrong,” Baker said. “All of our hearts sank when that happened.”

Odorizzi’s 2020 season with the Twins was derailed by frequent injuries that limited him to only 13 2/3 innings all year. He has been relatively durable for the Astros this season, though, making 21 starts despite missing nearly all of May with a right pronator muscle strain.

The Astros are on the fifth day of a 17-day stretch without an off-day and were considering going to a six-man rotation now that José Urquidy, Wednesday’s starter, is back from a two-month IL stint. Odorizzi’s absence will scuttle those plans for now.

“We’ll go on daily [to determine] what we need, and a lot of it depends on how they perform,” Baker said. “You have to have six starters that you feel are ready and capable and able to handle it. You don’t want to go to six just to go to six.”