The Ireland captain struck to make it five goals in four games as LA Galaxy cruised to a 3-1 home victory over their rivals
The 32-year-old forward, who was recently dropped from Giovanni Trapattoni's Ireland squad for the upcoming friendly against Serbia in August, opened the scoring for Galaxy on 14 minutes after a through ball from David Beckham.
The goal marked Keane's fifth goal in four games and minutes later, the former Liverpool and Tottenham player had a goal ruled out for offside before striking the cross-bar as he sought to increase his team's lead.
However, the striker then turned provider as he set up Landon Donovan on 46 minutes, who slotted the ball into the Chivas net.
Chivas scored just five minutes later through Paolo Cardozo, but Donovan once again struck to make the final score 3-1 to LA Galaxy.
“I think [myself and Landon Donovan] combined obviously quite well," Keane told LAGalaxy.com after the game.
"We made it difficult for their defenders with our movement and the way we were linking up. Overall it was a good effort."