Okay twelve days is enough to wrap this one up. It's about 70% to 30% in favor of the shot put girl. However, the weighted average would favor the shot put girl's ability to knock the two cowgirls out.
My guess is that the two blondes would be a bit frightened of the black girl, and more than a bit intimidated by her size and strength. They're older but much weaker. Shot put girl probably weighs more than both put together. The two blondes may start out getting in a few weak blows but they'd soon get overwhelmed and beaten to a pulp. Next to the Discus Girl's massacre of the two blonde sluts, this would be the second most lop-sided fight.
Neither of the women look as if they could punch their way out of a paperbag. Meanwhile, shot put girl looks fierce and determined and has the killer instinct to destroy the women. I'd say she'd toy with them for a few minutes, start beating them and have them on their backs and out of it within five minutes. Shot put girl would drop the one on the right with one punch to the jaw after bloodying her face. Shot put girl would spot her weakness and lack of fighting ability off the bat. The other one looks tougher but she'd get knocked out before the five minutes are up. Then shot put girl would probably pile the two bikini-clad blondes on top of one another and squish them.
Perhaps Skinny Blonde, who recently lost to Sexy Woman, would be a good matchup for the blonde on the right. She looks like the quintessential door mat.