Moose Haas limited his former teammates to six hits in eight innings yesterday to become the first five-game winner in the major leagues as the Oakland A's defeated the Milwaukee Brewers, 7-2.

Dwayne Murphy and Jose Canseco hit two-run homers to support Hass (5-0), who was traded by the Brewers for four minor-leaguers before the season.

Haas said the triumph in Milwaukee's County Stadium, the ballpark he called home for nine years, was special. "Sure, it was the only team I hadn't beaten," he joked.

Haas struck out one and walked two before being replaced in the ninth by Bill Mooneyham.

"He knows the American League," said Oakland Manager Jackie Moore. "He's not going to beat himself. He's just a good all-round pitcher. He throws strikes."

Tim Leary (2-2) took the loss, giving up five runs and seven hits in five innings.

*Angels 7, Blue Jays 4: In Toronto, Brian Downing drove in three runs and had three extra base hits to lead California.

Winning pitcher Jim Slaton (3-1) worked six innings and allowed three runs on five hits as Toronto lost its fifth straight series at home dating back to 1985.

With the score tied, 3-3, the Angels scored two runs off Jimmy Key (0-2). Key, who left the game with an 11.94 ERA, gave up a single to Bob Boone. Boone was out on Darrell Miller's fielder's choice, but Rick Burleson's single put runners on second and third. With two out, Downing doubled to left-center field, scoring both runners for a 5-3 lead.

*Red Sox 12, Mariners 2: Wade Boggs went three for five, drove in three runs and scored three times to spark Boston to the easy win at home. It was the sixth straight loss for Seattle and fourth straight victory for the Red Sox.

Dennis (Oil Can) Boyd (2-2) gave up nine hits, walked one and struck out five to post his second complete game.

Leading by 2-1 in the fourth, Boston scored five runs off Billy Swift (0-1). Don Baylor was hit by a pitch for the second time in the game. He took second on Rich Gedman's single and third on Marty Barrett's bunt. Steve Lyons drove in Baylor with a single and, two outs later, Boggs' infield hit scored Gedman and Barrett came in on second baseman Danny Tartabull's throwing error. Bill Buckner followed with a two-run double.

*Twins 7, Yankees 4: Steve Lombardozzi and Tim Laudner singled home runs in the sixth inning, helping Minnesota break a nine-game Yankee Stadium losing streak. Kent Hrbek and Gary Gaetti had solo homers for the Twins.

Dennis Rasmussen (2-1) allowed two hits in 5 1/3 innings, but walked five, three of which scored. He walked Hrbek and Alex Sanchez, who had not drawn a base on balls in 207 previous major league at-bats.

John Montefusco struck out Gaetti. Lombardi misjudged Lombardozzi's catchable foul and it fell untouched. Lombardozzi then singled softly to left field and Laudner grounded an RBI single between third and short.