The University of Maryland's Bob Darling and Bob Boyd kept their poise against tournament veterans Wayne Jackson and Charles Holden Four Ball championship yesterday, 2 and 1.

Jackson and Holden, who won the championship 10 years ago, scored a 2-and-1 semifinal victory over the tournament favorites, Vinny Giles, former U.S. and British amateur champion, and Dave Wysong, the tournament chairman. Darling and Boyd eliminated Dave Allen and John Long, the comedalists, 3 and 2, in the morning.

Giles and Wysong were one down after the first nine against Jackson and Holden and lost the 14th to a par. Giles birdied the 15th to bring the margin back to one but Jackson birdied the 16th for the final margin.

Boyd and Darling played spotty golf against Long and Allen. The Maryland team was two up at the turn and finally put away the match on the 16th.

In the afternoon match, the two Terrapins consistently outdrive their older opponents by 30 to 40 yards on the long par fours, putting birdies within easy reach. Jackson is a former Richmond pro who regained his amateur status. He had a tremendous touch around the greens and kept his team in contention.

Boyd and Darling were five under par on their best ball on the first nine. Boyd, a 21-year-old recent graduate, had 32 on his ball and Darling, a 20-year-old sophomore had 33. But the two veterans stayed with the younger men.

The first two holes were halved with birdies. Jackson put his team one up with a birdie on the third. Darling evened it with an eagle on the par five fourth, sinking a 65-foot putt. The next break came at the eighth. Boyd's third shot hit the flag and bounced four feet away.

The next six holes were halved in pars and then came the break on the 15th. Darling put a wedge a foot from the hole, made birdie and the Terrapins went two up, three to go.

Jackson appeared to have made it a close match again, sinking a 20 footer for a birdie four on the 16th. But Darling coolly came back with a 12-foot birdie to maintain the two-up margain. The short 17th was halved in pars and that was it.

In other matches, Gary Fox, Andrews Air Force Base, and Mike Richter, University of Maryland, won the first flight, defeating Jim Castagna and Mike Toomey of Crofton; Pat and Barry McCarty, Belle Haven twins, won the second flight, beating clubmates Dave Gardner and Chip Beveridge, 5 and 4, and Chris Jurgonis, Fairfax and Jim O'Malley. Washingtonian, defeated Chip Heyl and Ted Valo, Reston, 5 and 4.