Most I ever saw was My Friend Bernie. He was an ATM machine.
First 200 straight exacta I ever hit was with him at Saratoga underneath a Hertler horse named Devils Cry that Rafael Mojica Jr rode, it was the 4th race on a Saturday and I had to sweat an inquiry or claim of foul against the winner.
I think Bernie was 2nd like 14 times in a row, something close to that.