Any Ivy League predioter whose reputation has weathered the recent blizzard of upset slaughters will have as tough a job as the groundskeepers keeping his slate clean tomorrow. Harvard ranks as a clear favorite against Brown but the other three Ivy contests match teams battling for the same position in the final standings.

The mammoth among the big ones is down at Princeton where the Tigers and Elis will square off for the Ivy and Big Three titles. Both Yale and Princeton boast 6-1 overall records (but Princeton's loss came in the League) and both have tremendous momentum.

The Bulldogs are looking invincible after three straight routs; Princeton is rolling high after clobbering Harvard 45-6. Princeton has one advantage in playing at home; Yale has the revenge motive of six straight losses to Princeton, including a galling 13-7 blocked punt defeat last season.

In their last two games Princeton and Yale have averaged 47 and 50 points, respectively, and in the last four have outscored their opponents by 115 and 111 points. But tomorrow's showdown should be a defensive battle, with the Tigers winning the League's first close upset, 16-14.

Former Bob Blackman assistant Jack Musick brings his Cornell team to Hanover to face his old mentor in a game that could put Dartmouth in position to lead the League or give the Big Red a shot at passing the Green. Both squads looked very disappointing last week, accumulating only two touchdowns each against Columbia and Brown. The hunch here, though, is that Cornell's demoralization is the more complete and Dartmouth will triumph, 21-7.

Columbia wil start its rise from eighth to sixth with a 32-20 victory over Penn. Both teams have good quarterbacks, but only the Lions have a defense.

Harvard's fortunes in the Big Three games oscillate wildly but against traditionally weak Brown the Crimson is traditionally triumphant. Form will hold at Providence tomorrow, by about 27-7.