"I might try it for a while, but if I have a bunch more [outings] like that, I won't," Robertson said.
Robertson only permitted one run, pitching the third inning in the Yankees' 9-3 loss to the Phillies at Bright House Field, but he said that he felt "very sloppy" in the appearance and told pitching coach Larry Rothschild so.
"I just couldn't make a pitch until I got into a bad count," Robertson said. "It just felt like one of those bad days when you go out there and don't have it. I felt really good, just couldn't find the strike zone."
Saying he felt "just a hair off" and that they would be simple fixes, Robertson added that he was slow to the plate, permitting Jimmy Rollins to steal two bases off him. Catcher Russell Martin didn't have a chance, he said.
"I'm just going to have to quicken up and really get myself game ready," Robertson said.