Rockville used a 19-2 surge at the beginning of the second half last night to blow open a close game and defeat 18th-ranked Sherwood, 79-69, in a Montgomery County Division II boys basketball game at Sherwood.

It was a strange game in which 46 fouls were called, 29 in the first half. Sherwood (9-3, 4-3 in the league) was 19 for 28 from the foul line in the first half and led, 39-38. at halftime.

Rockville (7-4, 6-3) did what it wanted in the first and third quarters, struggled in the second, and held on for the victory in the final period.

Guard Tim Shockley led the Rams with 20 points, 12 on three-point shots in the first half. He put the game away by hitting six of six free throws in the final 1:30.

James McRoy had 19 points for the Rams and Eric McClellam added 17, including three three-pointers.

Sherwood's Richie Anderson, who averaged 23.4 points a game before last night, had 21, but got into foul difficulty midway through the second quarter. Mike Barber had 17 and Eddie Farrell 16.

"We had some problems in the second quarter, but overall we played very well," Rockville Coach Dean Weingard said. "Our foul shooting in the second quarter was atrocious and they hit theirs. That was the difference in the first half."

The Rams led by 25-16 after the first quarter as they scored at will from everywhere on the floor. Shockley hit three three-pointers in the first period.

But in the second quarter, the Warriors scored all 23 of their points from the foul line or within five feet of the basket. Barber had 10 points in the period and Sherwood connected on 11 of 12 free throws.

Then in the third quarter, the Rams took over. After Farrell put the Warriors up by 41-38, Rockville scored nine straight points, including a layup and a three-pointer by McClellam, to go up by 47-41. After Barber stopped the run with a basket, the Rams went on a 10-0 spurt, converting four layups and an inside shot to push the lead to 57-43.

"They just outplayed us in the second half," Sherwood Coach Mel Laughner said. "We couldn't do anything and they were scoring everytime down floor."

The Rams had a 59-48 lead after three quarters and didn't allow Sherwood to get closer than seven points in the final period.

The Warriors were 26 of 37 from the line overall, and Rockville was 14 of 24.