On Saturday Blake Murphy updated something I looked into awhile back, which was hitters with a reverse platoon split. This reminded me of another unusual split I came across earlier this season. Despite the fact that Arizona has a the 4th most hitter-friendly basic park factor and is the 8th most homer-friendly home run park for right-handed hitters, right-hander Paul Goldschmidt has been better on the road in his career. During his call up season and first full season (2011-2012), Goldy had a .338 wOBA at home and .382 wOBA on the road. Some of that was a strikeout rate that was 3% lower on the road, but that alone isn’t enough to account for a 44 point difference in wOBA.
He has been basically as good at home and on the road this season, but he has still been slightly better on the road. This just seems so strange because the average basic park factor for his road games (weighted for the number of games he has played in each park) is 99.27, and the HR as R factor for his road games is 99.17. That’s compared to a 105 basic park factor and 105 HR as R factor at home in Arizona. In other words, Goldy has had conditions 6% more favorable at home in his career, yet his wOBA is significantly higher on the road.
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