Bethesda Country Club won seven of a possible nine points at Columbia Country Club and defeated four-time defending Washington-area champion, 9 1/2-8 1/2, in a semifinal of the Maryland State Golf Association team matches yesterday.

Columbia had yielded only 1/2 point in three previous matches on its home course. Yesterday, Bethesda's Ned Pugh and Weldon Mathis took 2 1/2 points from Henri deLozier and Dave Burgin, Dave King and Greg Howard 2 1/2 from Fred Von Bargen and Tony Ciconte and Ed White and Ed Offterdinger two from Gerry Nye and Bob Sherwood.

At Bethesda Jack Singleton and Jeff DeSanto, won the last hold against Columbia's Marty West and Bill Scott, gaining 1 1/2 points. Singleton and DeSanto won the front nine.

Bethesda will play Rolling Road, Baltimore-area titlist, Saturday at 1 p.m. for the state title.

In quarterfinals of the Northern Section of the Virginia State Golf Association team matches, Fairfax defeated Springfield, 10 1/2-7 1/2, Chantilly beat Evergreen, 13 1/2-4 1/2, Washington bested International, 12-6, and Woodlawn turned back Army Navy, 12-6.

In Saturday's 1 p.m. semifinals, Chantilly plays Woodlawn and Washington opposes Fairfax.