Cash Crash

Played the cash tables last night, and after doubling my money early on, things went horribly wrong as three times I was dealt AA, and three times failed to win, beaten once by JJ, once folded to a big raise on a scary flop of QQJ, and worst of all, lost to 83 off suit. He called my preflop raise with 83o! He was then on a straight draw after the flop, and called my raise once more. He rivered the straight and I take a big hit.