Chivas’ win was its second in four games, matching the club’s total from its previous 20 matches. After a scramble in front of the goal in the 51st minute, Edgar Mejia sent a cross into the middle of a congested penalty area. The ball deflected off two United players and fell to Torres, who fired a shot past goalkeeper Bill Hamid.
Torres has scored five goals in the last four games and he leads Chivas (6-15-7) in goals despite playing just nine games.
Chris Pontius played the final 25 minutes for United (3-19-5) in his first appearance since July 7. Pontius, who led United in goals last season, missed seven games due to a hamstring injury.
The teams entered as two of the worst in MLS. United is in last place in the Eastern Conference, Chivas USA is in last in the Western.
●IMPACT 4, REVOLUTION 2: Patrice Bernier converted two penalty kicks in the first half and Marco DiVaio also scored twice for visiting Montreal.
New England (13-7-6) played short-handed for the final 85 minutes after goalkeeper Matt Reis was issued a red card.
Meantime, Montreal extended its unbeaten streak to four matches (3-0-1).
Reis was penalized for a hand tackle on DiVaio while attempting to retrieve a loose ball in the penalty box.
Diego Fagundez and Kelyn Rowe scored for New England (10-10-7).
Bernier’s second penalty kick put Montreal ahead 2-1 in the 33rd minute after the Revolution’s Jose Goncalves received a yellow card for pushing Felipe Martins down inside the penalty box.
Bernier picked the lower right side of the Revolution net for his fourth goal of the season.
The match was played on natural grass, as the Gillette Stadium artificial turf was graded over to comply with FIFA standards for the international friendly match Tuesday between Brazil and Portugal.
●RED BULLS 4, DYNAMO 1: Thierry Henry scored the go-ahead goal in the 47th minute and Jonathan Steele had a goal and an assist to help New York win on the road.
The Red Bulls (13-9-6) took advantage of a short-handed Houston lineup to score three second-half goals. They are the third road team to win at BBVA Compass Stadium since it opened in 2012. Jason Johnson scored for Houston (10-10-7).