Trey was perched high above the rest of the crowd, which consisted mostly of civilians. All of the shouting and cheering from all of the the drunk townsfolk wasn't as loud from up there. If he were to sit in the stands with them, he wouldn't even be able to hear himself think, let alone concentrate on the fight. 

  He watched as Robert entered from one side of the arena, and a dragon flew in, landing on the other side.  This dragon was several times larger than Robert, and could probably kill him with a single attack. He jumped on the dragon's back and began stabbing him with his rapier, which, unsurprisingly, didn't end up working. Robert got a few hits in, but he was soon thrown back on the ground. He took a hit from the dragon's fire breath, followed by a hit from his claws, which left him almost dead.

  Trey thought the battle was over at that point, but he was wrong. While the dragon was taunting him, Robert drank a potion that transformed him into a dragon, much to the surprise of his opponent. After a healing spell, they were both on equal footing. It only took a few more attacks for Robert to defeat the dragon at that point. With the dragon defeated, they now had a safe place for the civilians to stay.

  Trey flew down to Robert after he left the arena.
"I must say, that was some quick thinking with that potion." He said. "There aren't that many people that have faced a dragon one-on-one and lived to tell the tale."