BALTIMORE (AP) _ Scott Schoeneweis needed seven weeks of solid pitching to construct the fifth-best ERA in the American League.

It took 98 pitches to ruin it all.

The Angels' left-hander gave up a club-record 11 runs Wednesday, and the Baltimore Orioles got three hits and three RBIs from Jeff Conine in a 12-5 rout.

Schoeneweis came into the game with a sparkling 3.04 ERA, but by the time he was done, it had swollen to 4.48. It was the first time in nine starts that he allowed more than four earned runs.

``It was just a bad day. Whatever I slopped up there, they hit it, although not pretty hard,'' Schoeneweis said. ``I didn't have much rhythm out there.''

Schoeneweis (3-3) gave up 11 earned runs, 12 hits and three walks in four-plus innings. He also hit a batter and threw two wild pitches.

``Hopefully these days are few and far between,'' he said.

David Segui hit two doubles and drove in three runs for the Orioles, who built an 8-0 lead after two innings and coasted to their sixth win in eight games. The 12 runs was a season high.

It was the second time in six days that Baltimore pounced on a left-handed starting pitcher in the midst of a fine season. Minnesota's Eric Milton had the third-best ERA in the AL before being roughed up for seven runs in 3 1-3 innings Friday.

Like Milton, Schoeneweis has a history of poor performances in Camden Yards. In four career appearances in Baltimore, Schoeneweis has allowed 19 earned runs in 15 innings.

``This place kind of kills me. I think everyone has a team or a place or something that's (trouble), and maybe Baltimore's mine,'' he said.

The Angels' previous record for runs allowed in a game was 10, set several times, the last by Ken Hill in April 2000. Schoeneweis is the first pitcher in the 41-year history of the franchise to top that figure.

``He seemed to get behind hitters early,'' Anaheim manager Mike Scioscia said. ``They seemed to be on everything he was throwing. The first two innings were pretty rough.''

Troy Glaus homered, doubled twice and drove in three runs for the Angels, who hit five doubles, but fell to 8-15 on the road.

The first six Orioles reached base in a five-run first inning. Brady Anderson scored on a wild pitch, Conine singled in a run and Segui hit a two-run double before Cal Ripken hit an RBI single.

Baltimore improved to 5-2 on the season-long 12-game homestand that runs through Memorial Day.

``We've been playing well this homestand,'' manager Mike Hargrove said. ``We've been getting runners on base and getting key hits.''

The 15-hit effort lifted Baltimore's team batting average to a season-high .241.

``In the early part of the season, no one was hitting,'' said Segui, who has eight RBIs since returning from the disabled list May 15. ``Then a couple of guys started hitting, and it becomes contagious.''

Baltimore starter Willis Roberts (5-3) snapped a three-game losing streak, allowing four runs in five innings.

Conine has hit in eight straight games, going 15-for-33 (.455) with 15 RBIs.

Notes: Anaheim's Tim Salmon went 0-for-4 with two strikeouts and is in a 4-for-41 slump. ... Batting cleanup for the first time this year, the Angels' Wally Joyner went hitless with a walk. ... Over the past 12 games, the Orioles have scored five or more runs in an inning six times.