Those first five years with the Cubs Hack hit .331/.419/.612, with 177 home runs (led the League 4 times), 708 RBI and 30.6 bWAR. Offensive numbers were crazy at that time, but Hack was still a cut above everyone else in the NL.
While Hack and the Cubs didn’t make the Series in 30, they did in 29, where they lost to an absolutely stacked A’s team with Jimmie Foxx, Al Simmons, Left Grove and Mickey Cochrane.
Tom Hanks’ character Jimmy Dugan in A League of Their Own was a composite of Hack and Jimmie Foxx.