BALTIMORE -- Orioles catcher Matt Wieters and his wife, Maria, are expecting their first child any day now, and manager Buck Showalter said the tentative plan is for her labor to be induced during Thursday's off-day.

"He's probably getting tired of me asking him, but I talked to him on the plane last night to let him know which game in a perfect world would fit better for us," Showalter said of Wieters, who has seen an increased workload as the regular season winds down with the O's in a pennant race.

"Obviously we are going to work around he and his wife and the pending baby. But he told me, so far so good. You got to be careful [with] the terminology, but Thursday looks like a day to move it forward. ... That would be the best for them and us."

Wieters entered Monday's doubleheader hitting .252 with 22 home runs and 82 RBIs in 136 games. In 19 September games, he has hit .333 with five homers and 17 RBIs.

Wolf to undergo MRI on bothersome left elbow

BALTIMORE -- Orioles pitcher Randy Wolf has been dealing with left elbow discomfort since the last inning of his start Saturday at Fenway Park and, after seeing team orthopedist Dr. John Wilckens, the plan is for Wolf to have an MRI on Tuesday morning.

Manager Buck Showalter said the medical staff is also leaning toward giving Wolf a cortisone shot, which would shut him down for a few days, but that likely won't be determined until after he gets the MRI.

"I'm hoping if he gets the injection he's done for a couple days, which he would have been anyways pitching on Saturday," Showalter said. "So, hopefully he will be available to us Friday after the off-day."

Signed as a free agent after being released by Milwaukee, Wolf made his second start for the Orioles on Saturday, pitching five innings and allowing three earned runs on seven hits and two walks against the Red Sox. He is a combined 5-10 with a 5.65 ERA in 30 games (26 starts) this season.