Keith Hernandez has figured out how to use the telestrator and no one is safe

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Generally, broadcasters know how to use telestrators. It's a good tool for them to use when explaining shifts or drawing mustaches on players they've always wanted to see with mustaches.
Anyway, during Tuesday's Marlins-Mets game, New York broadcaster/revered sitcom actor Keith Hernandez figured out how to use Citi Field's -- just in time for the stretch run. And, well, he loves it. By loves it, I mean he loves drawing circles around Ron Darling's head.

There's also thee, um, "Gary Cohens of Silence":

Basically, Keith Hernandez did what we'd all probably do if armed with a broadcast telestrator on live television and we hope his skills only improve as the season goes forward.