This sounds encouraging. Heck, research that yields this is always appreciated: In 2004, Yankees pitchers allowed 2,027 ground balls. Based on the amount of balls put into play by left-handed and right-handed batters against the Yankees, I expected Yankee shortstops to make 450 assists. Derek Jeter played 93% of defensive innings played by the Yankees, so I expected him to have 419 assists. Jeter actually had 392 assists, which puts him at -27 assists above average. Converted to runs, he's -16.