TORONTO -- Orioles outfielder Luke Scott underwent season-ending surgery on his torn right labrum on Tuesday morning, performed by Dr. James Andrews in Pensacola, Florida.

Scott has been battling the injury for most of the season and needed to be placed on the 15-day disabled list earlier this month as the ailment continued to act up. He made a brief attempt at a comeback, going 5-for-10 in three rehab games with Double-A Bowie last week, and 0-for-3 in his return to the Orioles on Friday.

But after Friday's game Scott continued to experience pain in his shoulder, and the team decided to place him back on the disabled list. Tuesday's surgery guarantees that he will stay there for the rest of the season.

"Luke was upbeat," Orioles manager Buck Showalter said. "Hopefully they can get it taken care of. Dr. Andrews was pretty matter-of-fact about what he thought the next step should be. It's really the second group to kind of concur with the same thing that our doctors felt. So I think they've got their arms around it and I'm hoping that Luke is on his way to a healthy recovery."

The Orioles' outfielder finishes his season batting .220 (46-for-209) with nine home runs and 22 RBIs in 64 games. It's the first time since 2005 that Scott has played less than 65 games in a season and snaps his three-year streak of at least 20 home runs and 65 RBIs.

With Scott shelved for the remainder of the season, there are plenty of at-bats to go around for some of the Orioles' younger players. That includes 27-year-old Nolan Reimold, who has seen the majority of time in left field during Scott's absence.

Reimold is batting .239 (22-for-92) with five home runs and 26 RBIs in 34 games so far this season. But he may not be the only one to benefit from Scott's absence.

"We'll see what the situation dictates," Showalter said. "We have other people on this club that also deserve to play. But we've given Nolan a good share of at-bats lately and we will continue to try to create ways to keep everybody involved."

Britton has encouraging start in Double-A

TORONTO -- Zach Britton pitched well for Double-A Bowie on Monday night and will likely rejoin the Orioles to start the second half of Saturday's double-header with the Yankees.

Britton's pitching line looked anything but good, as he allowing four earned runs on eight hits in 4 2/3 innings. But Orioles manager Buck Showalter said that he was very encouraged by Britton's start and that the line does not tell the entire story.

"It was actually good," Showalter said on Tuesday after speaking to Britton on the phone earlier in the day. "It's probably the best he's thrown in a long time. It was encouraging last night, that's why you talk to him. There's a lot more than just stats going on there."

Britton struck out nine batters in the game and Showalter felt that if not for some defensive miscues behind him, Britton's line would have looked much better.

"Probably only two of those runs should have scored, if you look at it," Showalter said. "He was really effective."

Bowie made three errors in the game as the defensive gaffes extended innings and ran Britton's pitch count high. The coaching staff decided that it was best to pull him and save his arm for Saturday's start.

With Britton making the start on Saturday night, the Orioles still have a decision to make as to who will pitch the day portion of the doubleheader. Chris Tillman, who was sent down to Triple-A Norfolk on June 1, seems to be the favorite after a series of good outings in the Minors.

Tillman is 3-3 in ten starts for Norfolk, posting a 4.17 ERA with 32 strikeouts. He has thrown two quality starts in a row and has given up just five earned runs over his last three starts.

But before Tuesday's game in Toronto, Showalter was still hesitant to tip his cap as to who would be getting the start.

"There are a lot of options," Showalter said. "We'll see where we go."

Worth noting

• Despite sitting last in the American League East with a 40-58 record entering Tuesday, the Orioles are actually much improved over last season, when it took them until August 11 to win their 40th game.

• After hitting just .121 (7-for-58) with runners in scoring position in the first nine games of July, the Orioles are batting .318 (21-for-66) with runners on second or third in 11 games since that point.

• The Orioles have made just three errors in their last 113 innings, dating back to July 8 vs. the Red Sox.