"But," Lee said, "I think I'm wising up that I need to throw it more, no matter what."
The results are in resounding favor of more curveballs. Lee fired his third consecutive shutout Tuesday, joining Hall of Famer Robin Roberts as the only two Phillies pitchers to ever do so. He has not allowed a run in 32 straight innings, the longest streak of his career. It's the longest scoreless streak for a Phillies starter since Roberts twirled 322/3 scoreless innings 61 years ago.
In June, Lee threw 42 of a possible 45 innings in five starts. He allowed one run on 21 hits, with eight walks and 29 strikeouts. That yields a crazy 0.21 ERA for the month.
"He has control and command of the game," manager Charlie Manuel said.
At the end of May, Lee's ERA was nearing 4.00. In June, he located his fastball and cutter better. He avoided predictability in his first pitches. And he threw more curveballs than ever before.
In his first 12 starts, Lee threw his curve 7.6 percent of the time, according to Pitch F/X data. In five June starts, curveballs accounted for 11.7 percent of his pitches. It has been his third-most used pitch, eclipsing the change-up. Pitching coach Rich Dubee suggested that Lee add the curveball more often. The reasoning lies in common sense.
"It's the biggest separation between my fastball," Lee said. "With as many fastballs and cutters as I throw, it messes with their timing more than my change-up. It's a big pitch for me."