I'm not sure if he was simply being facetious or serious. But assuming he was serious, why not go ahead and legalize steroids or at the minimum, loaded bats?
http://www.espn.com/mlb/story/_/id/23384674/trevor-bauer-cleveland-indians-saying-mlb-pitchers-using-sticky-substances
http://www.espn.com/mlb/story/_/id/23384674/trevor-bauer-cleveland-indians-saying-mlb-pitchers-using-sticky-substances