Some players nap before games, crank up music, read books, play games etc. Others break up fights at fast food restaurants.

Ravens receiver Tandon Doss prevented a potential tragedy at Five Guys burgers just hours before the start of Thursday's game against the Redskins.

Carl Fisher, 34, manager at the Inner Harbor Five Guys, told the Baltimore Sun that a Ravens player had muscled in to break up a skirmish right before the dinner rush.

A spokesman for the Baltimore Police wouldn't confirm that Doss stepped in, but said the argument took place about 4:30 p.m. A man upset about being fired from the restaurant is believed to have attempted to attack the manager with a knife.

Police say two men who used to work at the burger joint left the scene, but dropped the knife inside the restaurant. The Five Guys manager suffered a minor cut on his chin and was released from the hospital.

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Doss, 21, was a fourth-round pick (123rd overall) out of Indiana in the 2011 NFL Draft. The 6-2, 205-pound wideout had two receptions for 28 yards against the Redskins on Thursday night. Overall, in three Ravens preseason games, Doss has six receptions for 65 yards.

Doss let his followers on Twitter know about his heroics with this tweet:

The Ravens picked up veteran Lee Evans from the Buffalo Bills to start on the other side of Anquan Boldin. Torrey Smith and David Reed are the backups on Baltimore's depth chart. Doss is battling for playing time with Marcus Smith, Justin Harper and LaQuan Williams.

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