The Crimson fencing team, in its best performance of the season, sewed up fourth place in the Ivy League Saturday and gave coach Edo Marion his first win over Yale in five years here, easily defeating the Elis in the I.A.B., 20 to 7.

The freshman squad, producing for the first time this year, also looked very impressive in a solid 15-12 win over Yale. Jim Pruett, fencing in sabre, won all three of his bouts.

There was never any doubt about the varsity match. At the end of the first round, the Crimson led 8 to 1--the only loss being in foil. In the second round, the varsity dropped another foil bout, but went on to pick up six more wins and the match, as the score went to 14 to 4. A win in foil, three in sabre, and two in epee brought the Crimson total to 20 in the final round.

The showing in sabre, where Marion has expected most this year, was perfect, as the division swept the event, 9 to 0. Mitch Thomas, Doug Runnels, and Dave Silbert each won three of three.

In epee, which the varsity took 6 to 3, Doug Fitchen won all three while Bob Scrivner won two and Tony Enders picked up one. Peter Boyce and Mike Klapper, feincing in foil, won two of three as the Crimson took the event, 5 to 4. Bill Trebilcock aded the other win.