OAKLAND -- Bartolo Colon will be placed on the 15-day disabled list and Tommy Milone will be called up from triple-A Sacramento to start in his place for the A's series finale against Cleveland on Sunday, A's manager Bob Melvin confirmed Saturday afternoon.
Colon, 40, felt a twinge in his left groin while throwing on flat ground Friday, Melvin said. The A's called Milone that night, requesting his presence in Oakland in case a roster move needed to be made.
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The A's obviously felt the need on Saturday.
"The prudent thing to do is not push Colon too much here," said Melvin. "He's had a great season for us and we've leaned on him pretty hard. Maybe with his age, at this point a break might be good for him."
Milone was optioned to the River Cats on Aug. 3, making two starts for the A's top minor league affiliate. The left-hander did not earn a decision in two starts after throwing a combined 10 1/3 innings, at Omaha and at Iowa, and striking out 15 and walking one while surrendering 16 hits and two earned runs.
"I felt comfortable there," said Milone, who last pitched on Monday. "I got back to where I wanted to be. I guess the goal was to throw strikes and not let them score runs. It was a less stressful environment…that was a good thing."
It was also Milone's first time with Sacramento.
Colon makes his first trip to the D.L. this season, a watershed campaign for the 14-game winner who is attempting to become the first pitcher to win at least 15 games with four American League clubs.
Colon (14-5, 2.97 ERA) has struggled mightily, getting pummeled by Cincinnati and Houston in his last two starts. He has lasted a combined 6 2/3 innings and has an ERA of 13.50 in the defeats.