A dangerous Princeton swimming squad will attempt to shatter the Crimson Varsity's winning streak tonight at 7:30 o'clock in the Indoor Athletic Building pool, before a capacity crowd.

Underdogs tonight, Tiger tankmen hold three national intercollegiate records: Al Van de Weghe's in the backstroke; Dick Hough's in the breaststroke, and Van de Wegne, Hough and Captain Johnny Simpson in the 300-yard medley relay. In these events the Tigers are virtually unbeatable unless any of three things happen. Crimson Coach Hal Ulen may put Charlie Hutter in the free-style leg of the medley; Dario Berizzi, in top form, may catch Hough off form; Van de Weghe may have an off day and be nosed out by an inspired Graham Cummin.

By far the most likely of these alternatives is the change in the medley lineup. The breast and backstroke events, other things being equal, will go to Princeton.

Rusty Greenhood's 103.09 point performance last night when he lost to Navy's Gibson, makes him a slight underdog to Harry Cranston, undefeated Tiger spring-boarder.

Princeton's free-stylers do not measure up to the standards of Hutter, Barker, Kendall, Coleman, and their mates, so that the Nassau men cannot be conceded at the most more than four first places. Bob Snyder, helping Greenhood in the dive, has a chance to place, and Ray Benedict, Harley Stowell, Bob Murphy, and Jack Kennedy ought to score seconds or thirds. The often-vital last event, the 400 relay, is certain to be taken by the Crimson.