Brantley has struggled against lefties, so if we face a lefty in the NL park it is an extremely easy choice. But Brantley has been an elite hitter against RHP over the last few seasons, so he plays against them no question. No way the diminished defense outweighs his bat. Frankly his bat has been so consistently weak against lefties I think they should platoon him full time so he doesn't play against LHP. Myers and Chaz are flat out better players against them. Yordan obviously plays no matter what.
I don’t think we will play Yordon and Brantley in the same outfield. To me it has to be Alvarez over Brantley in the NL park. Brantley will be an excellent PH