BOSTON (AP) _ Wil Cordero had a bases-clearing double in Boston's season-high seven-run third inning and Jose Canseco hit two two-run homers Monday night as the Red Sox rolled to a 16-4 victory over the Oakland Athletics.

Mo Vaughn tied Cleveland's Albert Belle for the league lead with his 17th homer and Bill Haselman added a solo homer in his first four-hit game as the Red Sox collected nine extra-base hits in a 21-hit attack.

Boston, which has won five of its last six games, beat Oakland 12-2 Sunday. The Athletics have lost five of six.

The Red Sox chased Oakland starter Doug Johns (3-5) with their biggest inning of the year. Haselman and Troy O'Leary opened with singles. Milt Cuyler walked to load the bases before Cordero sliced a double down the right-field line to make it 3-0. Cordero is 7-for-10 with 13 RBIs with the bases loaded this season.

Cordero had to be helped from the field in the ninth when George Williams slid into the second baseman on a force play. Cordero was favoring his right knee as he was helped off by two teammates.

John Valentin doubled home Cordero. After Vaughn flied out, Canseco made it 6-0 when he sent a towering drive over the left-field screen for his eighth homer. O'Leary drove home the final run of the inning with a double that chased Johns.

Boston added four runs in the fourth against reliever Todd Van Poppel, all with two outs. Mike Stanley doubled in two and Tim Naehring and O'Leary each had an RBI-single.

Tom Gordon (3-2), who was upset after being pulled after four innings in his last start, retired the first 12 batters. Mark McGwire led off the fifth with a towering drive over the left-field screen, his sixth homer.

Gordon allowed four runs and seven hits over eight innings.

Canseco had his first multiple homer game with Boston and the 24th of his career when he hit a two-run shot off Buddy Groom in the fifth to make it 13-1.

Jason Gambi hit a three-run homer in the sixth against Gordon, his eighth of the season, to cut the deficit to 13-4.

Haselman's homer, his second, made it 14-4 in the sixth and Vaughn homered in the seventh to make it 16-4.

Notes: Every player in Boston's starting lineup had scored a run by the fourth inning. ... The Red Sox have homered in 10 consecutive games. The club record is 14 set in 1985. ... McGwire's homer was the 18th of his career at Fenway and the seventh in the last two years. ... Boston left fielder Mike Greenwell, currently on the 15-day disabled list with a fractured left ring finger, will receive a shot Wednesday to see if he can avoid surgery. ... Canseco has homered in three straight games. His last multi-homer game was Aug. 3, 1994. ... Giambi left the game after his sixth-inning homer with a bruised right ankle.