At least, that's how A's manager Bob Melvin would like to see it played out.
Allen, whom the A's acquired in a trade that sent right-handed reliever Brad Ziegler to the Arizona Diamondbacks, was recalled to the Majors before Saturday's game against the Texas Rangers and inserted into the starting lineup at first base.
"He's a talented guy who has power," Melvin said. "He's a good athlete who can play first base and left field. He can also be used as a left-hander off the bench in a pinch-hitting role."
Allen was hitting .306 with 18 home runs and 66 RBIs with Triple-A Reno when he was called up by the D-backs less than two weeks before the trade.
"He walks and he gets on base," Melvin said. "He's definitely a guy who can be productive. He's a work-in-progress, and we'll have to see how things shake out."
Melvin assured Conor Jackson that the first-base job is still his to lose. The manager said he was being given a scheduled day off after hitting a pair of doubles and driving in the A's lone run Friday night.
"What Conor has done warrants him to be the everyday first baseman," said Melvin. "We can use Brandon in the outfield mix."
The A's also brought up right-hander Bruce Billings to give Melvin flexibility with the long role out of the bullpen.
Billings came to the A's as part of the trade that sent infielder Mark Ellis to the Colorado Rockies.