Returning after missing 11 days with a strained left oblique, the Yankees right-hander served up a solo homer to J.J. Hardy in one inning of work on Tuesday but was more impressed by the 95-mph fastballs he fired.
"This is the best I've felt in Spring Training," Chamberlain said. "My numbers have correlated, and [as far as] my velocity, usually I'm about halfway through the season when I'm throwing this hard. That's always a plus."
Chamberlain had not appeared in a game since March 11 against the Braves. He said that holding his hands lower, as he did in 2007, has helped his mechanics.
"You've got to make adjustments when you're in this league for a long time," Chamberlain said. "I learned that the hard way when I got beat around a little bit.
"I've had success here, but you have to be able to make adjustments. These guys are too good in this league to not make those."