OAKLAND — Jarrod Parker extended his unbeaten streak to 18 games on Wednesday, propelling the A's into a first-place tie with the Texas Rangers in the American League West.
Parker (11-6) also won his ninth straight decision, beating American League strikeout leader Yu Darvish as the A's topped the Texas Rangers 11-4 at O.co Coliseum.
The 24-year-old right-hander's 18-game unbeaten streak is the franchise's longest since Lefty Grove strung together 21 straight starts without a loss in 1931.
"To be in the same sentence [as Grove] is an honor," Parker said. "I just try to take it in stride and I'll look back after the year and process it."
Parker, who boasts a 2.59 ERA since May 28, allowed two earned runs on five hits in six innings of work. His only blemishes came in the third when Leonys Martin drove in Jim Adduci with an RBI double and Craig Gentry brought in Martin with a soft flare to right.
"He could have gone further," A's manager Bob Melvin said, referring to Parker's outing. "I wanted to give him a break — he's been in the eighth and ninth innings the last four times, I believe."
The A's jumped on Darvish (12-7) in the first inning when reigning American League Player of the Week Brandon Moss blasted his 26th home run of the season with Jed Lowrie aboard, giving the A's a 2-0 lead.
The round tripper was Moss' fifth in the past eight games he's started.
The A's drew back-to-back walks to lead off the third before Coco Crisp stretched the lead to 3-0 by scoring Daric Barton with a sacrifice fly to right. Darvish tied a career high by walking six batters in the game.
Barton knocked Darvish out of the game in the sixth by smacking his second big fly of the season with Alberto Callaspo on first base, putting the A's ahead 5-2.
In six career starts against the A's, Darvish is now 1-5 with a 4.87 ERA.
"If you get him on the run early, like any good starter, it seems like you have a better chance," Melvin said. "Moss hits the home run and it looked like he had some command issues after that."
The A's picked up another six runs off the Rangers bullpen, including a three-run home run from Josh Donaldson, his 20th, and a two-run shot from Crisp, his 18th. With the win, the A's are now 9-3 over their past 12 games. They've won three consecutive series against teams currently holding playoff spots.