Houston Dynamo FC came back from two goals down, took the lead before halftime and still left San Diego with only a point. Gabriel Pirani's 86th-minute goal after a corner tied Wednesday's match 3-3 at Snapdragon Stadium.
The opening half produced five goals. Anders Dreyer put San Diego ahead from the penalty spot in the 20th minute, and Cédric Bakambu made it 2-0 two minutes later on a fast break set up by Onni Valakari.
Guilherme pulled Houston within one in the 24th minute, assisted by Lawrence Ennali. Mateusz Bogusz equalized in the 33rd from a Guilherme pass, and Guilherme struck a volley from outside the box in the 37th for a 3-2 Houston lead at the break.
The second half belonged to San Diego on the ball. The home side finished with 61 percent possession and 17 shots to Houston's 10, and Houston goalkeeper Jonathan Bond made three saves before Pirani found the equalizer.
