Undefeated teams around Cambridge are about as rare as pennants in Philadelphia. Whenever a local outfit seems headed for a perfect season, some uncongenial opponent manages to throw the switch that spoils the record. Last fall's soccer aggregation, roaring through the first half of its season unbeaten, fell to Dartmouth at the halfway mark and never quite shook it off; and once again the Big Green seems to be waiting to knock off a Crimson group, this time the swimmers, who have bowled over M.I.T., Brown, Army, and Navy with apparent ease.

How long they can keep up this carefree sauntering is problematical, for this weekend brings a doubleheader to the schedule, and the next four weeks will pit Columbia, Pennsylvania, and Yale against the swimmers. Tomorrow's meet should be the toughest match until Penn, for the Green holds a 4-2 record, having lost to Yale and Williams after topping its first four opponents. Saturday night will find Springfield in the pool at the Blockhouse.

The two strong points of the Hanover squad are the breaststroke and backstroke. Captain Jay Urstadt and Chuck Solberg have the unusual distinction of being co-holders of the Dartmouth pool record in the former event, while Dana Jackson is top man in the latter, a race which has consistently fallen to Crimson opposition this season. If Captain Chuck Hoelzer can pull the breaststroke out of the fire at Hanover, the meet may well go to the visitors.

Springfield's reputation got a glant shot in the arm Tuesday night as a result of the basketball game; but there has been little day-dreaming around the pool about this particular contest anyway. The Gymnasts took M.I.T. and Tufts over the hoops easily, and dropped decisions only to Yale (a comparatively close 31-44 meet on opening day) and a tough Williams team. The chief threat here seems to be a backstroker named Whittin, who has turned in some pretty fine times this year.

If you can look beyond this weekend, things aren't too rugged. Columbia was absolutely overwhelmed by the same West Point group which had little to offer a month ago against the Crimson. Penn is pretty much unknown in these parts, but they precede Yale by only a week, which is somewhat of a problem in itself. All in all, the best thing seems to be a quick crossing of the fingers at this point. Much depends on the Dartmouth trip.