A bit clearer this time:
475 Rookie Pitchers
477 Rookie Infielders
478 Rookie Pitchers
480 Carl Yastrzemski
487 Rookie Pitchers
488 Rookie Outfielders
475 Rookie pitchers , 477 rookie infielders, and 488 rookie OF were missing.
478 rookie pitchers, Yaz, and 487 Rookie pitchers were upgrades.
40 missing (6.0%)
89 upgrades (13.5%)