Brock Lesnar hasn't been around in a while.
What sport does Brock Lesnar play?
Brock is a pro wrestler and  MMA fighter.
How big is Brock Lesner? Is he a large guy?
He's probably about 6'6'' and almost 300 lbs. He is a beast.
Is Brock a better pro wrestler or MMA fighter?
He's been at the top in both, but it's not really an apples to apples comparison since wrestling is a show and not really a sport.
Have you ever seen Brock fight in person?
Not in person, no. But I've seen him win the UFC Title.
What league is the UFC?