I have heard... stories about Yipes playing under no pressure. High level players go to his house to train and want to quit the game afterwards.
A little while back he literally ripped apart the entirety of EC's top level players (minus Chris G, who never goes anywhere that doesn't have dat paypuh). I don't remember exact numbers, but in first to 100 sets, most people didn't get past 20.
If he could handle pressure better, he would unquestionably be the best player in the history of ever. He's starting to get better at that going by Summer Jam's outcome.