I thought he won the fight against Sakuraba.
I thought Mezger won the Arona fight back then, but I remember it as a boring fight so I haven't rewatched it many times... Mezger was winning the fight on points, and I think that at the very very end of the fight Arona did a reverse Hendricks and went 170% , so he got the split decision
The Sakuraba one is more complicated, it was a draw, and it was still back in the days when in case of a draw, the smaller fighter (Saku in that case) got the nod... plus, Mezger was exhausted at the end of the fight, while Saku still seemed fresh and wasn't even breathing hard.
I honestly think that Ken was right to remove Guy from the fight, because an overtime wouldn't have favored the gassed
Lion's Den elite...
Mezger also put on a really good fight against a green Lil' Nog (lost a split decision with him when Rogerio only had 5 fights under his belt)
Guy's Pancrase days were also pretty damn cool, his rivalries with Semmy Schilt, Yuki Kondo, Suzuki and Funaki were badass
And of course, submitting Tito Ortiz was also pretty damn cool

And sure it was a very green Tito, but Frank Shamrock always gets mad props for beating Tito, and that was just 3 fights later