The Eagles will play their spring game at 1 p.m. on Saturday. Montel Harris, the ACC's leading returning rusher, and his backup, Andre Williams, are likely to be held out for "safety reasons," according to a school spokesman. The Eagles have been using backups in their scrimmages. Here are three main plot lines to watch:

• How the offense looks under first-year coordinator Kevin Rogers. Rogers has a reputation for developing quarterbacks, and Chase Rettig should be better in his second season as a full-time starter -- if he and his teammates grasp the new playbook quickly. Rettig threw for 1,238 yards, six touchdowns and nine interceptions as a true freshman last season.

• The secondary. The Eagles suffered key losses with the graduation of DeLeon Gause and Wes Davis, but true freshman (spring enrollee) Al Louis-Jean has turned heads in spring drills. Senior corner Donnie Fletcher will compete for All-ACC first-team honors this season, and Jim Noel cemented his position with an outstanding sophomore season. Sophomore C.J. Jones is expected to compete for a starting role as well.

• Eagles in the trenches. For the first time in years, the Eagles will have a different look on the offensive line, as only two starters returned from last year's team. Defensively, only one starter returned in Kaleb Ramsey, who started nine games last year at defensive tackle. The good news is that BC has plenty of defensive linemen who have had significant playing time.