UFC has signed a pair of welterweights who will debut against each other at the upcoming pay-per-view event in Sydney. Thursday, Bellator veteran Keifer Crosbie announced on Instagram he signed a multi-fight deal with the UFC. Crosbie (10-3 MMA, 0-0 UFC) will make his debut on short notice at UFC 293 . The pay-per-view event headlined by Israel Adesanya vs. Sean Strickland for the middleweight title takes place Sept