Don’t discount veteran O-lineman As the Las Vegas Raiders continue training camp, one of the biggest positions of interest is on the offensive line. Both of the guard positions are open for competition this summer as is the right-tackle spot. The players in the mix at guard are Lester Cotton John Simpson, rookie Dylan Parham. Of course, Alex Leatherwood could also end up at a guard spot as well, though, for now, but he is in the mix for the right tackle job. But then there is Jermaine Eluemunor who can play guard and tackle. Do not discount Eluemunor, who…