OAKLAND -- The Angels' first grand slam of the season came from an unlikely source.
Kaleb Cowart, who entered Tuesday batting .123 in 73 at-bats this year, crushed his first career grand slam off Lou Trivino to cap a six-run sixth inning that helped propel the Angels to a 9-7 series-opening win over the A's at the Coliseum.
The A's took a 4-1 lead into the sixth, but the Angels came back to load the bases with one out after Jose Fernandez walked and Justin Upton and Shohei Ohtani singled.