Helped by a myriad of Magruder mistakes, 13th-ranked Springbrook built a 21-0 advantage then held off a late rally to defeat the 14th-ranked Colonels, 21-13, in a Montgomery County nonleague game yesterday at Springbrook.

The Blue Devils (4-0) surrendered 175 of Magruder's 318 yards in the second half, including a two-yard touchdown run by tailback Nick Provinzano that pulled the visitors within 21-13 with 6:14 to play in the game. The defending Maryland Class A state champions (2-2) got two more chances to win the game.

After Springbrook failed to convert a fourth-and-seven situation at the Magruder 19, the visitors went to their passing game. Charles Devereaux (11 of 20 for 198 yards, two interceptions and one fumble) completed three passes to move his team to the Blue Devils 35. But on a fourth-down play, the quarterback was pressured, avoided a defender and threw an off-balance pass toward the end zone. Safety Brad Brown intercepted the ball to halt that threat with two minutes to play.

Magruder's defense held and forced a punt. Taking over at his 36, Devereaux threw three incompletions before he was sacked for the fourth time by Mark Sturdivant with five seconds remaining.

"He {Devereaux} was getting more time to throw than he should have," said Sturdivant, a 6-foot-3, 215-pound end. "They rolled out a lot, sometimes the quarterback came right to my side. On the last sack, we had a stunt on and no one blocked me. I went straight for him."

The teams spent much of the first half running straight at one another. The major difference was Magruder had problems hanging on to the ball.

Brown's first interception at the Magruder 28 set up his team's first score. A 13-yard run by Calvin Martin on a fourth-and-12 play kept the drive alive. On the first play of the second period, Terry Wolfram rolled out and hit Tony Jenkins for a one-yard touchdown pass. Marcus Cockrell's first of three conversion kicks was perfect for a 7-0 lead.

Two minutes later, Magruder's Wayne Ward fumbled and Brian Flanagan recovered at the Colonels 29. On the next play, Wolfram threw a middle screen pass to Brad Brown, who ran into the end zone for a 14-0 lead.

Magruder lost the ball on its next possession as Devereaux was sandwiched on a run and Kevin Brown fell on the loose ball at the Magruder 32. Nine plays later, Wolfram scored from three yards out to make it 21-0 with 3:43 to play in the first half.

Devereaux completed three passes, including a 51-yarder to Ward, as Magruder went 80 yards to score. Provinzano scored on a one-yard run and Jeff Flach's conversion kick made it 21-7 at the half. Provinzano scored on a two-yard run in the final period.

Ward, Magruder's most productive player with more than 100 yards rushing and receiving, left the game with a fractured clavicle in the final period. Brad Dunne, Springbrook's starting two-way tackle, injured his ankle on the game's first play and did not return.Magruder (2-2) 0 7 0 6 13 Springbrook (4-0) 7 14 0 0 21

S -- Jenkins 1 pass from Wolfram (Cockrell kick)

S -- B. Brown 29 pass from Wolfram (Cockrell kick)

S -- Wolfram 3 run (Cockrell kick)

M -- Provinzano 1 run (Flach kick)

M -- Provinzano 2 run (kick failed)