600 Home Runs
Millwood currently has 563 home runs. Like Becker, he is also a free agent entering Season 16. At age he still brings 90 power. He hit 31 homers last season. Over the next two seasons, he's likely to get at least 37 homers to join the 600 club.
At 36, Beckett has 63 power. If he gets enough PAs, Beckett should join the 500 club this season.
How far past 500 will Lilly be at the end of this season? And when will he be looking at the 600 club?
Banks had a major injury last season. He is currently a free agent. 500 might be tough for Dingo (make your own "baby" joke).
Barrett hit 30 homers last season. At 37, his skills seem to be eroding. 500 - it better be this season.