The summer heat combined with three hour full-contact practice was going to light a fuse in one of the Philadelphia Eagles players sooner rather than later.

Turns out that player was All-Pro Fletcher Cox.

Cox cold-cocked an offensive lineman to the ground after a hard-hitting play between the offensive and defensive line during team drills.

A dust up between o and d line. Fletcher Cox flies in from out of nowhere to clock one of the o linemen to the ground. — Tim McManus (@Tim_McManus) August 4, 2016

Fletcher Cox just cold cocked an offensive lineman who went down momentarily as Connor Barwin was entangled w/someone. #Eagles #FightClub — Matt Lombardo (@MattLombardo975) August 4, 2016

The Eagles don't allow the media to shoot practice after warmup drills, so no video is knowingly recorded.

Connor Barwin was also involved in the scuffle.

Big fight. Connor Barwin was getting in with an O-line man, then Cox came in from no where and absolutely nailed somebody #Eagles — Eliot Shorr-Parks (@EliotShorrParks) August 4, 2016

Eagles fans will enjoy a defense with high intensity. Cox and Barwin are two players that provide that spark.

The Eagles defense dominated the practice during team drills, so it is no surprise the offensive line would retaliate. Fights could be common throughout this portion of training camp as the Eagles are in the second day of five full-contact sessions in six days.