Stop Derek Farmer.That's one of the goals for Temple's defense heading into Friday's 7:30 p.m. football season opener at Tyler Lee.Farmer, a 6-foot, 210-pound bundle of trouble, accounted for 58.3 percent of the Red Raiders' offense last season, racking up 1,934 yards rushing and 141 receiving en route to the team's third straight appearance in the Class 5A Division I area round.And getting to him won't be easy. He has plenty of protectors