Complex sentence: In June 1982 Tillis came off the floor to outpoint the hard-hitting legend Earnie Shavers but blew that momentum only a few months later, being upset by late substitute (and future world champion) Pinklon Thomas.
Split into simpler sentences: In June 1982, Tillis came off the floor to outpoint the hard-hitting legend Earnie Shavers. Hw blew that momentum only a few months later, being upset by late substitute (and future world champion) Pinklon Thomas.