Oliver or Lenoir? 49ers’ Wilks sees new possibilities at nickel back

SANTA CLARA — Without a locked-in starter at nickel back, 49ers defensive coordinator Steve Wilks sees a situational rotation as a possibility. During free agency the club brought in Isaiah Oliver, who played the position during his time with the Atlanta Falcons. During Saturday night's preseason contest with the Denver Broncos, cornerback Deommodore Lenoir was moved inside to defend the slot receiver for a handful of plays. The two defensive backs are built differently. Oliver stands six feet tall and weighs 210 pounds. Lenoir is listed at 5-foot-10 and 200 pounds. Wilks believes they could both be used at the nickel position when facing different opposing receivers. "I wouldn't put Demo on a tight end," Wilks said on Monday. "We may want to go nickel with 12 personnel. I'm not going to put Demo on the tight end. Oliver's going to be on that other tight end. "There's going to be certain matchups in the slot right there based off who that guy may be. I'm not going to put Oliver in that situation. Demo may be that guy." Coach Kyle Shanahan insinuated there was heavy competition for the role following the club's preseason opener in Las Vegas when nearly every starter sat out of...