Coach Hal Ulen's varsity swimmers open their second attempt at overturning Yale at 10 a.m. today, this time in the Elis' own pool at the Payne Whitney Gymnasium In New Haven. The occasion is the Eastern Intercollegiate Swimming League's 15th Annual Invitation Individual Championships, which means that the Crimson will have the top swimmers from all over the East helping in the upset effort, running through Saturday night.

Though no team score is kept (unlike the NCAA meet next weekend), the varsity will be trying to beat the Blue in the individual events, as it did in the races for first place in the dual meet which closed the regular season.

Because the Easterns draw a wealth of talent from the whole seaboard area, however, the Elis may be prevented from taking the large number of second places which enabled them to edge the Crimson, 44 to 40, last Saturday.

In addition to Yale's stars--Rex Aubrey, Kerry Donovan (looking for his third straight championship in the 50), Sandy Gideonse, and Dave Armstrong--and the one or two aces several members of the EISL sport, schools such as the University of North Carolina, Springfield, Lehigh, and Cortland State Teachers of N.Y. will be sending power to New Haven.

The varsity's Jim Jorgensen will try to whittle down the Crimson records of 2:07.8 and 4:43.5 which he set against Yale in the 220 and 440. Springfield captain Bruce Hutchinson, whom Jorgensen beat in the 220 during the regular season, will provide his most serious opposition in both events. Dartmouth's John Glover is also a threat over the shorter course.

Dave Hawkins will be seeking to repeat his 150-yard individual medley victory over Yale's Gideonse and to revenge his loss over the 120-yard distance to Springfield's Jack Mayers, who holds the New England record for the event.

Hawkins will also join the Crimson's Sigo Falk in the breaststroke in an attempt to reverse losses to Princeton's

John Swabey and Springfield's Art Semle. Cadet Don Kutyna, who swam a 2:28.6 over the 200-yard distance but did not face the Crimson in the Army meet, may prove a tougher fee.

Chouteau Dyer will try to trip Yale's Donovan again, and sophomore individual medleyist Pete Macky will probably try the sprints also, along with Jack Edwards.

Finally, Ulen will attempt to topple Yale's 400-yard freestyle relay team, which he was unable to do to win the dual meet with the Elis. In the Easterns, however, he may have Hawkins free to combine with Dyer, Edwards, and Jorgensen