As far as Bill Dargert, Whitman High School athletic director, is concerned, Montgomery County's Friday experiment with night football was a success in every way except one. Whitman lost to visiting Rockville, 26-0.

Dargert was so impressed with the turnout he is planning to talk to the school booster club and administration about having permanent lights installed if the county agrees to have night football regularly. More than 2,100 fans attended the game, nearly twice as many as Whitman usually draws on Saturday afternoons.

"Maybe the word about night football out here was late getting around, but we had a good crowd. Our gate receipts were twice as much as a Saturday game," Dargert said. "We didn't have as many students from other schools as I thought we would, but I saw more adults than I've ever seen at a football game. Rockville brought a lot of people, too."

Dargert said the gate receipts were just enough to pay for expenses (estimated $5,500), but he felt the turnout proved the county could expect a profit if it decided to play more night games. Dargert and many of his fellow athletic directors in the county are sure, based on the success night football has enjoyed in Northern Virginia, Prince George's and the D.C. Interhigh leagues, that Montgomery receipts would increase.

"If each school purchased its own lights, they would make more money," Dargert said. "A lot of people, school administrators, etc., came out to see how it would go. Bill Kyle (Montgomery County athletic director) was here and said he was impressed with the way things went. We didn't have any trouble at all. We play Seneca Valley Friday night and now that people know we have night football, maybe more will come out. I hope so."

Friendly, by scoring in the final seconds to beat Potomac, 13-12, increased its regular-season football unbeaten streak to 24 games since a 1979 loss to Northwestern . . . Potomac's 13-0 victory over Crossland two weeks ago was its second in six years over the Cavaliers (Potomac defeated Crossland, 33-32, in '76). It had been reported to be the first in 11 years . . . After four weeks of play, there are 18 unbeaten area teams . . . B-CC's 14-13 defeat of Woodward ended a 16-game losing streak. The last previous Baron victory was against Woodward, too, 36-21, in 1980. Einstein, Cardozo, Hayfield and Clarke County weren't as fortunate as B-CC last week, losing their 24th, 22nd, 21st and 18th straight, respectively.

Top-ranked Springbrook has won 17 in a row. Landon has won 13.

The Southern Maryland IAABO Board 134 (basketball officials) is accepting applications for the upcoming basketball season. Contact either Eddie Dolan in Bowie or Rick Carptenti in Largo . . . A reunion for the 1967 Annandale state championship football team will be held Nov. 5. There will be a reception and dinner in the high school before the Fairfax-Annandale game.

Mike Maloney had the week's best individual performance, passing for three touchdowns, running for a fourth and kicking two extra points in Rockville's 26-0 victory over Whitman. Other outstanding individual efforts: Doc Basil scored three times to help Madison defeat Herndon, 32-21; Kenny Jones threw two touchdown passes and ran for a six-pointer and Nathaniel Cary scored three times to lead H.D. Woodson to a 43-0 victory at Coolidge; Mike Turner's third interception stopped a St. John's drive late in the game and preserved a 10-6 De Matha victory. --Donald Huff