Bob Harwick made all four birdies in teaming with Chantilly clubmate Wayne McGowan, and Dick Bowen (Evergreen) and Ralph Boccarosse (Hidden Creek) shared heroics, as both teams shot best-ball 68 yesterday to tie for the lead in qualifying for this weekend's Belle Haven Four Ball golf tournament.

Harwick, the Chantilly club champion, who also has won championships at Penderbrook and Westwood, sank birdie putts of 40, 10 and four feet, and two inches and shot three-under-par 69 on his own ball. On the only hole on which Harwick faltered, the par-5 12th, McGowan scrambled to a par to preserve their no-bogey round.

Bowen, who lost in last year's final with Brian Lehnhard as partner, birdied three holes. Boccarosse rolled in a 10-footer for birdie at 16 and made a great birdie at the par-4 18th. There, he drove into a bunker and hit his wedge second shot 15 feet from the hole and sank the putt.

"I like our chances," said Harwick, 27, a real estate administrator. "I'm playing really well and Wayne is an ex-professional."

Tim Krouse and Dave Oakley of Westwood were tied at 70 with Ed Offterdinger and David Hughes of Bethesda, and Scott Kimmel and Steve Thomas of Tantallon, and Ron Lark and George Clenney of Robin Dale.

Seventy-four teams competed yesterday. They will sit out while another 72 teams play today. The lowest 15 teams, plus defending champions Neff McClary of Fairfax and Wilson Dickerson of Alta Vista, Va. (automatic qualifiers), will gain Saturday's 16-team championship flight.