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OAKLAND -- There is no timetable for Drew Pomeranz's recovery from a fractured hand, and according to manager Bob Melvin, no one feels worse about it than the A's left-handed starter.
Pomeranz punched a chair on his way into the clubhouse after allowing seven earned runs in under four innings against the Rangers on Monday, and he'll need to be replaced, for the time being, in the starting rotation.
"It's disappointing," Melvin said. "It affects how we go about our business. Gotta realize there's ramifications when you do something like that, and he's realizing that right now."
With Pomeranz on the 15-day DL, the A's need a starter for Saturday's game against the Red Sox, and the team has not settled on who it will be.
[RELATED: A's place Pomeranz on DL, recall Scribner]
Left-handed pitcher Brad Mills, who was purchased from the Milwaukee Brewers on Tuesday morning, "will be a candidate," according to Melvin.
Melvin acknowledged he doesn't know much about Mills, only that "he's somebody our organization has liked for a while."
Mills last pitched in the majors for the Angels in 2012, following three years with the Blue Jays. The 29-year old is 4-2 with a 1.56 ERA in 14 games, 12 starts with the Triple-A Nashville Sounds this year, collecting 77 strikeouts to 18 walks.
[RELATED: A's acquire LHP Brad Mills from Brewers]
The manager also mentioned Dan Straily, Josh Lindblom and Arnold Leon as internal options to make the start.
Straily, 25, is 4-1 with a 3.55 ERA in seven start with Sacramento this season. He is 13-11 with a 4.11 ERA in 41 major league starts over the past three seasons.
"He's a guys that we've looked to in the past," Melvin noted.
Through 13 Triple-A starts apiece, Leon, 25, is 6-2 with a 5.35 ERA and Lindblom, 27, is 3-3 with a 6.20 ERA.
Based on the staff workload this season, Melvin ruled out bumping up the rotation to cover for Pomeranz before a pair of off days next week bookending a two-game, interleague trip to New York.
Pomeranz, who wore a brace after he was diagnosed by doctors on Monday night, will have a chance to rejoin the staff when his fractured glove hand has healed.
"You're always looking to have the best guys," Melvin said. "How long it takes to get him going when he gets back could be a factor, but he's done an awfully nice job for us. For a guy that was moved into the rotation in the middle of the season … it was pretty impressive the way he did it."
Pomeranz is 5-4 with a 2.91 ERA in 17 appearances for the A's. In eight starts since he was installed in the rotation on May 7, the 25-year old is 4-4 with a 3.21 ERA.
"He's going to try to keep his arm in shape," Melvin said. "But not really sure how long it's going to be."