If you select * from yankees, you'll note that there are only 11 players in the table, however, one of the tests is that the expected rows count 13

Might want to ensure at_bats = 100 in some test cases to catch out some incorrect answers

"taking all the players hits" But actually, it take the player's hit to divide

I noticed some solutions don't quite hit the "atbats" condition correctly. Maybe add some extra rows to "make or break" a solution based on that, actually selecting the wrong amount of rows if the condition isn't set up properly?