Closer Zach Britton was scheduled to make his first minor league rehabilitation appearance Monday night at Short-A Aberdeen, but the threat of bad weather forced the Orioles to push that outing to Tuesday.
The change shouldn't delay his scheduled return.
"We talked with [Aberdeen]," manager Buck Showalter said. "Obviously we're better equipped to handle that, but it won't affect his schedule tomorrow, provided he pitches tomorrow. We had a couple rain days built in."
In other injury news:
>> Right-handed reliever Darren O'Day had an "extensive" bullpen session Monday afternoon — the first time he's thrown off a mound since going on the DL with a right shoulder strain June 7 — and Showalter said O'Day's next step is to pitch a simulated game Wednesday.
If that goes well, Showalter said, O'Day could be activated as early as Friday, when the Orioles open a three-game series at Tampa Bay.
>> Utility infielder Ryan Flaherty, who has been on the DL for a month and is rehabbing a right shoulder strain in Sarasota, Fla., felt discomfort during a throwing session Monday after extending his session beyond 60 feet.
"He was throwing at 60 feet with no problem and he went a little bit more today and felt it somewhat, so that was discouraging a little bit for him and for us," Showalter said. "We'll see. Go back to 60 feet and see what we've got."
>> After receiving a cortisone injection last week to temper bursitis in his right shoulder, right-hander Mike Wright is scheduled to report to Sarasota to begin his rehab there.
Rookie first baseman-outfielder Trey Mancini entered Monday leading the major leagues with a .459 batting average (17-for-37) with runners in scoring position. Center fielder Adam Jones (.391) and Schoop (.388) ranked second and third in the American League, respectively. ... The eight homers hit Sunday by the Orioles and St. Louis Cardinals were the second most on a Father's Day. The record is 11 by the Tigers and Chicago Cubs in a 12-3 Detroit win June 18, 2006. … The Orioles won five of six from Cleveland last season.