Four Harvard tennis players made a mockery of the Eastern Intercollegiate Tennis Tournament at Dartmouth yesterday, winning all four semifinals berths in the singles, and taking the doubles title.

Paul Sullivan, Frank Ripley, Doug Walter, and Sandy Walker blasted all opposition off the courts as they made the singles semifinals strictly a Harvard affair. The semis will be played at Harvard, probably sometime after examination period.

Ripley and Walter walloped Doug Floren and John Morrison of Dartmouth for the doubles title, 6-4, 6-1. Walker and Sullivan had lost in the semifinals to the Dartmouth pair, 7-5, 9-7, for the only Crimson defeat of the entire touranment.

Walker Shines

It was the unheralded Walker, not even among the first six Harvard players at the start of the year, who provided the two biggest upsets of the tournament. On Friday he downed the second seeded player, Bent Aasnaes of M.I.T., 9-7, 7-5, and in yesterday's quarterfinals he ousted Dartmouth's number one player, Dave Smoyer, 5-7, 6-2, 6-2. His first set against Smoyer was he only one lost by a Harvard player through the entire tournament.

Ripley, who meets Walker in the semifinals won by a default in his morning match and smashed Frank Thayer of Williams, 6-2, 6-4, in the quarterfinals.

Sullivan, the Crimson's captain and number one player, won by a default in the morning and beat Dartmouth's number two man, Doug Floren, 6-2, 6-2, in his quarterfinal. Sullivan had won his two Friday matches by 6-0, 6-0 scores.

Walter, who will face Sullivan in the other semifinal, outshot Morrison, 8-6, 6-1, in the quarterfinal after winning from John Armstrong of Williams, 6-3, 6-1.

In the doubles, Sullivan and Walker had an easy time with Steve Hecht and Art MacDonald of Bowdoin, 6-2, 6-3, while Ripley and Walter outshot Brooks Gunnard and John Armstrong of Williams, 6-4, 8-6. Walker was in his fourth match of the day when he and Sullivan lost the doubles.

The win gave the Crimson six points out of the eight necessary to retire the tournament trophy. One point is given for a victory in the singles or doubles and half a point for reaching the finals.