The guy? he's sparring is a california golden gloves champion but has a pro boxing record of 3-3 all his losses are against very tough opponents. I think Anderson would Ko him in 2 rounds if they were to box for real.
That is perfect example on why fighters like anderson need the cage. His elusivness and footwork is tuned for the cage, he got cut off by the ropes like 4 times in 2 rounds, and took the worst beating stuck in the corner. but he did well avoided much damage.