Derek Jeter taking a swing at cyber bullies

Gabe Ginsberg/FilmMagic Derek Jeter’s sister, Sharlee, is the president of his Turn 2 Foundation.Derek Jeter didn't have to cope with cyberbullying while growing up, but he's aware enough of the issue that his Turn 2 Foundation announced a partnership Thursday morning with an app designed to fight it.

Jeter, the former Yankee shortstop who retired after the 2014 season, is also an investor in Stop!t, an app that the company says is implemented in more than 100 schools nationwide.

"None of us can relate to this social media frenzy going on — it wasn't when we were in school," Sharlee Jeter, Derek's sister and the president of Turn 2, said in an interview. "For Derek, social media is kind of a…