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In this Dec. 1, 2013 file photo, Philadelphia Eagles sports science coordinator Shaun Huls holds a placard, center, during the second half of an NFL football game against the Arizona Cardinals, in Philadelphia. Eagles rookie head coach Chip Kelly finds signs better for communicating then microphones because the whole team can see the information and speed up his lightning-fast offense

FILE - In this Dec. 1, 2013 file photo, Philadelphia Eagles sports science coordinator Shaun Huls holds a placard, center, during the second half of an NFL football game against the Arizona Cardinals, in Philadelphia. Eagles rookie head coach Chip Kelly finds signs better for communicating then microphones because the whole team can see the information and speed up his lightning-fast offense. (AP Photo/Michael Perez, File)

Chip Kelly's playcalling signs

Yahoo Sports

Chip Kelly is known for two things, his signature visor and innovative playcalling signs. Kelly and his fast paced offense have entertained on the field this season. Take a look at some of the more interesting playcalling signs from this season.