Guerrero played three games last season in left field, but none of them starts. His time in the field so far this season was limited to third base, with five games before Tuesday at the hot corner.
"His weakness in general is his inexperience, just from not being out there very often. Dealing with the wall," manager Don Mattingly said. "Strength wise and athletically, he has shown he can play out there."
The Dodgers are going heavily right-handed against Madison Bumgarner, with Guerrero in left field and Scott Van Slyke in right field. Guerrero, who homered as a pinch hitter last Wednesday against Bumgarner, is 4-for-6 with two home runs and a sacrifice fly against southpaws this season.
Van Slyke is 2-for-8 with three walks and a hit-by-pitch this year against left-handers, and in his career is .267/.369/.519 against them. He is 5-for-16 (.313) with a double and four walks against Bumgarner.
But that's not all. Kiké Hernandez, just called up from Triple-A Oklahoma City, gets the call in center field in place of Joc Pederson, and Justin Turner starts at first base instead of Adrian Gonzalez.
A.J. Ellis is back behind the plate, catching Clayton Kershaw for the fourth time in five starts this season. Ellis last caught on Wednesday, but left in the ninth inning after taking a fastball off his right hand while catching. Ellis is 3-for-8 (.375) with a double in his last two starts. Ellis is just 3-for-22 (.136) with a double and two walks against Bumgarner.