The only convincing argument that has been presented is that Santo benefitted from a Wrigley that was favorable to hitters during his time. If this was true, and if it wasn't so much Santo having a hitting style tailored to Wrigley or the effects of him having to deal with diabetes, we should see the same effect for other Cubs players who played at the same time. Here are the career home/road splits of players who spent the vast majority of their time playing for the Cubs at the same time as Santo. I'm too lazy to isolate the seasons they played for other teams. Santo: 1960-73 with CHC, 74 with CHW Home: .296/.383/.522/.905, tOPS+ of 118 Road: .257/.342/.406/.747, tOPS+ of 82 Glenn Beckett: 1965-73 with CHC, 74-75 with SDP Home: .292/.328/.361/.689, tOPS+ of 108 Road: .274/.307/.329/.636, tOPS+ of 92 Don Kessinger: 1964-75 with CHC, 76-79 with STL and CHW Home: .264/.328/.326/.654, tOPS+ of 109 Road: .240/.300/.297/.597, tOPS+ of 91 Billy Williams: 1959-74 with CHC, 75-76 with OAK Home: .302/.374/.525/.899, tOPS+ of 110 Road: .278/.349/.459/.808, tOPS+ of 90 Ernie Banks: 1953-71 with CHC Home: .287/.345/.532/.877, tOPS+ of 112 Road: .258/.312/.463/.775, tOPS+ of 88 Randy Hundley: 1964-65 with SFG, 66-73 with CHC, 74-75 with MIN and SDP, 76-77 with CHC Home: .245/.300/.378/.678, tOPS+ of 111 Road: .228/.285/.322/.607, tOPS+ of 90 It looks as if there generally was a benefit to playing in Wrigley, although Santo's home-road splits would suggest that there was something unique that made him especially favorable to hitting at home. Does this mean that he deserves to remain on outside the Hall? I personally think no, but understand if someone points to his road splits as a reason why he should. To OMC's point we'll never know how much of that was due to traveling with diabetes, or if all of the Cubs favorable splits at home were due more to adapting to day games than anything about the park specifically.