What happened: Johnny Walker is officially moving up to the heavyweight division. He makes his debut at the new weight class against Mick Parkin at UFC 332 on Oct. 3 in Salt Lake City.

Why it matters: Walker spent his entire promotional tenure at light heavyweight, establishing a reputation as a volatile striker. Eliminating the weight cut could improve his durability, but Parkin presents an immediate physical test. Competing at high altitude in Utah will also challenge Walker's cardiovascular endurance at a heavier walk-around weight.

What to watch: The UFC 332 lineup continues to finalize its undercard ahead of the Alexander Volkanovski and Movsar Evloev main event.