Four teams survived a dawn-to-dusk championship fight yesterday to gain the semi-finals of the 29th Belle Haven four-ball golf tournament.

Today's lineup calls for John Long and Dave Allen to face the University of Maryland team of Bob Boyd and Bob Darling in one semi-final, with Vinny Giles, former U.S. and British amateur champion, and Dave Wysong meeting Charles holden and Wayne Jackson in the other match.

The winners will meet in a final 18-hole showdown this afternoon.

"I feel like I've been on this golf course all my life," said Giles.

He and Wysong came to the Alexandria club early yesterday morning in the rain and finished two holes left over from their interrupted qualifying trial of Friday. "I've been here 14 hours," added Giles, "and that's a long day of golf."

Holden and Jackson barely made it before complete darkness. They gained the semifinal by beating co-medalists Dave Stearns and Brian Willard, 2 and 1.

Giles and Wysong turned back Vernon Niley and Charles Collett, 4 and 3; Boyd and Darling beat Butch Mielke and Frank Reese, 1 up, and Allen and Long turned back the father-son team of Wally and Davis Sezna, 3 and 2.

In the lone upset of the day, Perky Cullinane and Henri deLozier, both amateurs of national ranking from Columbia Country Club, lost to Mielke and Reese, 3 and 1.

Giles and Wysong were three up at the turn in the afternoon match. They lost the 12th to Niley's birdie and won the 13th and 14th with pars. They halved the 15th to close it out.

Holden and Jackson were one up after nine holes. Holden birdied the 12th and 14th but his team lost to 16th. The 17th was halved to end the match.

Boyd and Darling were one up after nine and two up after Boyd birdied 15. Mielke birdied the 16th to close the gap. The 17th was halved. Mielke, who had neen putting phenomenally, had a chance to square the match on the 18th but missed an eight-footer. Boyd plays No. 1 on the University of Maryland team and Darling is No. 2.

Long and Allen had their problems with the Seznas. The father, wally, is a veteran of several U.S. Amateur tournaments. Allen and his partner were one up at the turn and won the 11th and 13th with pars. The next three holes were halves to end the match.