The A's in-state rivals were doomed by an early slump last year, and the Angels appear to be unsettled by a slow start this season.

The Angels held a team meeting after dropping the first two games of the series, last season's Rookie of the Year, Mike Trout, was shuffled from leadoff to second in the batting order Thursday and still Oakland kept pounding them. The A's triumphed 8-1, sweeping the three-game series and outscoring the Angels 28-11.

"Remarkable, it really was," A's manager Bob Melvin said.

For the second time in the past 23 years, the A's have won their first six road games of the season; they won their first eight road games in 1990. It was the third time in Oakland history that the team went undefeated on a road trip of at least six games.

"We had a mission and we accomplished it," said Josh Donaldson, whose two-run homer in the sixth gave Oakland the lead for good. The Angels "have a lot of talent over there, obviously. We just had their number in this series."

Oakland has won eight in a row and has scored at least six runs in each game. The A's are 8-2, their best start since 1992, and have the top record in the American League. Oakland leads the majors in homers, with 18 (including a solo homer by Yoenis Céspedes in the seventh), and runs, with 66.

Second-year starter A.J. Griffin went eight innings and allowed five hits, a walk and one run while striking out two. He also worked eight scoreless innings at Anaheim last year in his only other start against the Angels. He is 2-0 with a 1.93 ERA this season and the A's are 14-3 in his 17 career starts.