Listen: Radio announcer does hilarious play-by-play of 49ers-Rams streaker

A fan ran on the field in the fourth quarter of Monday's intensely dull game between the San Francisco 49ers and Los Angeles Rams, providing one of the contest's few fun moments.

While TV viewers didn't get a good look at the field invader, those listening to the game on the radio heard a thrilling account of his illicit exploits from Westwood One radio commentator Kevin Harlan.