Board Thread:Questions and Answers/@comment-84.214.100.176-20170120050257/@comment-30408401-20170120052025

Well if you play the H2H season, the bonus fighters keep changing every month (eg. BJJ, Kickboxing, Wrestling, Yellow rarity, Gold rarity etc)

So upgrade according to the H2H seasons.

But if you wish to randomly upgrade the fighters

FW - Dominic Cruz/Bruce Lee LE, LW - BJPenn, MW Anderson Silva, HW - Jon Jones/Stipe Miocic, BW - Holly Holm