ANAHEIM, Calif. -- It took just one game for the Los Angeles Angels to revert to the way they played during the first half of the season.
Three errors, two unearned runs and a less-than-stellar pitching performance by starter Jerome Williams contributed to the Angels' undoing and a 6-0 victory by the Oakland A's Sunday afternoon at Angel Stadium.
The A's helped themselves with a nine-hit attack and another brilliant effort by All-Star pitcher Bartolo Colon, who held the Angels to four hits and a walk.
Colon improved to 13-2, thanks in part to strong defensive support. Josh Reddick took away a potential extra-base hit away from Mike Trout in the fourth inning, reaching over his head to make the catch before crashing into the wall.
Chris Young did even better by reaching above the center-field wall to take a home run away from Albert Pujols in the seventh inning.
The victory enabled the first-place A's to push their lead over the third-place Angels back to 10 games in the American League West race.
The Angels essentially took themselves out of contention in this one with a bumbling defensive showing in the sixth inning.
A throwing error by catcher Chris Iannetta on a double-steal allowed Reddick to score. Young, who reached third on Iannetta's error, scored when first baseman Mark Trumbo threw wildly to the plate on a grounder by Coco Crisp.
Colon allowed one-out hits to J.B. Shuck and Mike Trout in the ninth inning but stayed in the game -- after a visit to the mound by manager Bob Melvin -- to get the final two outs and record his first complete-game shutout since May 31. He retired 19 of the final 22 batters he faced.
NOTES: A's outfielder Yoenis Cespedes was not in Sunday's starting lineup because of his sore left wrist. ... Colon had not allowed a walk in 10 starts this season and issued only one on Sunday -- in the third inning to Eric Aybar. ... Angels catcher Chris Iannetta snapped a 0-for-12 drought with a single in the third inning of Sunday's game. ... RHP Garrett Richards could be inserted into the Angels' starting rotation if RHP Joe Blanton (2-12, 5.53) or Williams don't start improving, manager Mike Scioscia said.