Mattingly did, however, weigh in on the issue of pine tar and cheating.
"Personally, the way I look at pine tar, a lot of guys use some form to get a better grip," said Mattingly. "There's a difference in that and doctoring a ball or scraping it or using sandpaper."
Mattingly played a supporting role in the all-time pine tar controversy, George Brett's pine tar home run in 1983 against Mattingly's Yankees. When that protested game was resumed, Mattingly played second base, only the second left-hander to play a middle infield position since 1970.