"That's another momentum changer for us," Trembley said. "Nicky made a very good play, and Castro sold it. He deked the guy."
In the bottom of the inning, after Buchholz hit Mora, Luke Scott walked. Mora, while running to second, noticed catcher Kevin Cash holding the ball and looking down while no one was covering third.
So Mora kept running.
"We learned that last year because we were the recipient of them doing that to us ... so what's good for the goose is good for the gander," Trembley said.
The bizarre inning continued when Ramon Hernandez followed with a blast to left-center against reliever David Aardsma. Red Sox center fielder Coco Crisp gave chase, leaped and kept going.
In a tremendous effort, Crisp fell over the wall but did not come up with the catch. It gave the Orioles their first lead of the game, 6-4, one they never relinquished.
"He didn't catch it, so why should I care if he had a shot or not," Hernandez said. "I didn't even see him. I knew it was over the wall, so I just kept jogging."
Early on, rookie Chris Waters (2-0) didn't look as if he would stick around long enough to get a win. He gave up four runs in the first two innings but settled down and allowed just a homer by Jason Bay after that. He lasted five innings, allowing four earned runs on eight hits and three walks.
The Orioles got to Buchholz (2-9) in the second, scoring three times, and chased him in the third. Buchholz, who hadn't won since May 2, was sent to Double-A Portland after the game.
dan.connolly@baltsun.com