by a minivan that apparently ran a red light, police said.
The impact spun around both vehicles, and one then struck another car but that driver was not hurt, police said.
"It is a tragedy that will never be forgotten," he said at an Angel Stadium news conference.
The 22-year-old Adenhart was a passenger in a silver Mitsubishi Eclipse that was broadsided in an intersection in neighboring Fullerton at about a.m.
Adenhart's death came shortly after he made his fourth major league start in Wednesday night's loss to Oakland. Adenhart's father had flown out from Baltimore to watch the game.