RICHMOND HILL — South Effingham joined a growing club Friday night.

The Mustangs (0-9, 0-5 in Region 2-AAAAAA) became the 10th straight team to allow Richmond Hill running back Ashaud Roberson rush for at least 100 yards. The 5-9, 180-pound senior romped for 204 yards and four touchdowns in the Wildcats’ 55-7 victory in their regular-season finale.

Richmond Hill (8-2, 4-2) was coming off a stunning 7-5 loss to Glynn Academy. It had no trouble against the Mustangs, however, as it rolled to a 28-0 halftime lead despite getting just seven offensive snaps.

The Wildcats took the ball for the first time at the South Effingham 38 following a short punt. Two plays later, Roberson tallied his first score on a 37-yard jaunt.

The Mustangs pushed the ball into Richmond Hill territory on their second possession but bogged down at the 35. They tried a 52-yard field goal but it was off the mark.

Taking over at their 20, the Wildcats needed just three plays to reach the end zone again. Nuna Hunter tallied the touchdown on a 64-yard run.

Eating time with their single-wing attack via runs by Larry Scott and Brayden Bell, the Mustangs put together a 14-play drive that eventually stalled at the Wildcats’ 45, prompting a punt.

On the next snap, Roberson raced through the defense for an 80-yard scoring jaunt.

Richmond Hill’s final touchdown drive of the opening half also took just one play, a 75-yard pass from Tyler Coleman to Jordan Clark.

The scoring frenzy continued in the second half, albeit at a slightly slower pace. The Wildcats used 12 plays to post their final 27 points after taking just seven to score their initial 28.

Roberson, whose single-season streak of 100-yard rushing games is a Richmond Hill, record, scored on second-half runs of one and 59 yards. The other touchdowns came on a 15-yard catch by Ryan Steele and a 14-yard run by Evan Clark.

Scott tallied South Effingham’s touchdown on a 12-yard run early in the fourth quarter.

The Mustangs will close their season Friday at Bradwell Institute at 7:30 p.m.