Keith Hernandez (b. 1953) is a former Major League Baseball player. He is now a baseball analyst working for the New York Mets, for whom he played from 1983–1989.
Hernandez appeared in the Sesame Street, Special where he sang in a Celebrity version of "Put Down the Duckie" with Mookie Wilson. He also appeared in Season 19 with Mookie where the duo play Baseball with The Count, and helped teach Snuffy how to hit a ball in episode 2477..