His worst loss was to Rathjen in SV1. He had 4 other losses on the season: one to Bartlett at 141 in their "live wrestleoff" at the Black Knight that Kasak was never expected to win, 2 losses to Lovett (7-3 and 4-0), and 4-2 to Abas in the first round of NCAAs before he wrestled all the way back to 3rd, beating Arrington, Lovett (MD), and Watters on the backside. Sealey has taken a bunch of losses much worse than all of those.
At this point, as VHS pointed out, their folkstyle records speak for themselves. Sealey certainly has the pedigree and talent to make a major jump and truly challenge Kasak for the spot, but it will take a major jump. I'm not betting on it.