LA Galaxy came from 2-0 down at home to the San Jose Earthquakes to win 5-2 in Steven Gerrard's MLS debut.
Quincy Amarikwa put San Jose up 2-0 before Gerrard won a penalty which was converted by Robbie Keane for the first goal of his latest MLS hat-trick.
The former Liverpool captain scored the equaliser eight minutes before half time and then set up Keane to make it 3-2 in the 64th minute.
Robbie made it 4-2, again from the penalty spot, in the 80th minute.