Maths Inside Baseball

A park factor of 1.000 is a typical park, and anything above favors hitters
and anything below favors pitchers. Park factor formula allows us to
compare productivity of not just runs, but also homeruns, singles,
doubles, triples, or others.

Home Run Park Factor=(h(roomaedRRSS++hroomadeRRAA))÷÷rhooamdeGG

Chart 3-1: Home Run Park Factor 2019 I

Homer-Amplifying Parks (2019)

Park (Team) Park Factor

Coors Field (Rockies) 1. 280 

Yankee Stadium (Yankees) 1. 265 

Citizens Bank Park (Phillies) 1.224

Great American Ball Park (Reds) 1.205

Globe Life Park (Rangers) 1.145

Homer-Suppressing Parks (2019)

Park (Team) Park Factor

Oracle Park (Giants) 0. 688 

Marlins Park (Marlins) 0. 759