Eugene was injured in the third quarter of Oakland's preseason debut against the Arizona Cardinals. The 30-year-old was playing well, compiling a team-leading four tackles in limited action at the time of the injury. He was unable to leave the field under his own power, and was carted out by team doctors.
Undrafted out of Louisiana Tech, Eugene joined the Oakland Raiders in 2007. In four years with the team, he has served as a spot starter in the secondary while providing depth in nickel and dime packages. He signed a new contract to stay in Oakland over the off-season.