Springtime in New York will bring with it not one but two sports-oriented film festivals, including the 11th edition of the Tribeca/ESPN Film Festival, highlighted by the April 21 premiere of the “Mike and the Mad Dog” documentary.

More about that below. But first, something completely different: SNY will hold its first “SNY Future Filmmakers Festival,” in which students ages 14 to 19 (as of April 1) in New York, New Jersey and Connecticut are invited to submit “a New York sports-themed short film.”

Entries are due on May 11, and must be between three and 35 minutes in length.

Those selected will be featured in the festival itself on June 6 at the Made in NY Media Center by IFP in Brooklyn. Winners named there will be shown by SNY, both on TV and online. For entry information, see SNYF3.com.

Meanwhile, at Tribeca, set for April 19 to 30, “Mike and the Mad Dog” will be one of five feature films screened, including “Chuck,” about Chuck “The Bayonne Bleeder” Wepner, played somewhat improbably by Liev Schreiber.

Also appearing: Elisabeth Ross, Ron Perlman, Naomi Watts, Jim Gaffigan and Michael Rapaport.

Famed documentarian Alex Gibney offers “No Stone Unturned,” about the 1994 murder of six men who were in a pub in Northern Ireland watching a World Cup soccer match.

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“Year of the Scab” recalls the Redskins of the 1987 NFL strike season. “Samba,” in Spanish with English subtitles, chronicles a street fighter turned boxer in the Dominican Republic.

The slate also includes seven short films.