Robert Hoyle served 21 years in the Air Force, then forged a second career in boxing. He became the first licensed Black judge in the history of the Nevada Athletic Commission. In fact, he’s the first person, period, to be licensed as both a judge and a ref in the state, the boxing capital of the world. For more than 10 years, across 500-plus bouts, Hoyle has monitored lightweights and welterweights and heavyweights, standing up close to contenders and unknowns as they swing away and absorb blows. He has traveled to every continent except Antarctica, separating fighters and penalizing their transgressions everywhere from Tasmania to Thailand to Tokyo.