Round 1 = dunno (Ham landed more strikes, but Bec landed all of the hard punches. I think the strikes landed was 40-30 in Ham's favor.)
Round 2 = Rawlings
Round 3 = Rawlings (I give Round 3 to Bec. She kept Ham against the cage and didn't let her punch her. Ham could've won it if she wasn't gassed.)
Rawlings 2-1, at least.