HARVARDEDGE  YALE QUARTERBACK: Brian White is currently the third leading passer in Harvard history and needs only 40 yards to move into second place. Has been inconsistent overall, with .431 completion percentage and seven interceptions, but has led the Crimson to several fourth quarter rallies. Is third leading Harvard ground gainer this year, and is tied for the team lead in rushing touchdowns (four). Scampered for 15-yd. score last week. Has thrown five touchdown passes. Knows Multiflex well. Can run and throw.  *  QUARTERBACK: Yale has tried a tag-team approach to quarterbacking this year, without much success. Senior Mike "Don't Get Sacked Like Mc" Curtin (76-154-1050 yards, 6 td., 6 int.) is the starter, but he has been replaced in most of the games by sophomore Kelly Ryan (40-85-460-3-5). Neither has been very consistent. This looks to be one of Yale's weakest areas. RUNNING BACKS: At the beginning of the year, this unit looked to be one of Harvard's strongest, and it has finally fulfilled that potential of late. Fullback Robert Santiago--the top runner in the Ivy League--is coming in off of back-to-back 100 yard days and is running in top form despite several nagging injuries. The Saint is now fifth on the all-time Harvard rushing list, but can move into third place with 59 yards today and into second with 123. He has scored four rushing touchdowns and boasts a 4.9 average per carry. The group lost some depth when junior halfback Rufus Jones went down with a knee injury.  *  RUNNING BACKS: Tailback Ted Macauley lead, the team in rushing with 492 yards and four touchdowns, but was held to only 37 yards last week against Princeton. Wingback Mike Stewart--one of the most versatile backs in the league--has gained 331 yards. Still, the Bulldogs have only piled up 1165 yards on the ground this year, 450 less than Harvard. RECEIVERS: This group was largely ignored for the first part of the season when White elected to throw mostly to Santiago (who still leads the team in receptions) but has shone of late. Sophomore LaMont Greer, the starting split, has 13 catches for 214 yards including a notable 58-yarder last week, but was injured on the play and won't see action today. His backup, junior Joe Connolly, caught a touchdown pass two weeks ago and ran one in last week.  *  RECEIVERS: Yale goes to the air a lot, and when it does, it looks to a talented trio. Tight end Dean Athanasia (30-340-1 td), split end Kevin Moriarty (21-358-1) and tailback Macaulcy (20-232-3) are all fine targets who make up for a good deal of the deficiency of Yale's quarterbacks. Yale averages 190.3 yards per game passing, well over Harvard's mark. OFFENSIVE LINE: For a long time the squad's weakest area, this group had a great performance last week as it blasted through a highly-touted Penn defensive line to pave the way for over 200 yards rushing. Has had problems protecting White at times this year, but allowed only two sacks last weekend. Starting unit consists of Jim Morris, George Kostakos, Wayne Hunley, Mike Murray, Hal Watson and Joe Ryan. Must pave way for another 200-yd. day by Crimson runners today.  Even  OFFENSIVE LINE: Roger Anderson, Ken Lund, Bob Becker, George Matthews, and Steve Skwara. A decent group that opens holes for its backs and protects the quarterback on its good days, but sometimes (especially against Penn several weeks ago) has lapses on both fronts. DEFENSIVE LINE: One of Harvard's most improved units, the defensive line that includes Bill Ross, K.C. Smith and Jerry Garvey has been very stingy this year, allowing just 119 points. The Crimson has allowed an average of just 13 points a game over the season. Will have to stop the talented Yale rushing attack today.  *  DEFENSIVE LINE: A weak link in the defense. The unit of Malcolm Frank, Dean Yacobucci, and Yves Labissierre allowed over 200 yards rushing to Princeton last week and over 300 yards on the ground against Penn. Allowed 100-yd. days by backs over three consecutive weeks. LINEBACKERS: Senior linebacker Brent Wilkinson leads Harvard in tackles with 85. This is one of the Crimson's top areas, with Scott Collins and Bob Joyee providing more than adequate support for Wilkinson. Will have to provide support for Harvard's defensive line. Only potential problem is lack of speed.  *  LINEBACKERS: A better four than the three they stand behind. John Quinn, Carmen Liacqua (the team captain and the best among the lot), Ardel McKenna (also a good one) and Mike Ryan. Not a bad unit, but the porous front three leave this group to make too many tackles. DEFENSIVE SECONDARY: This is the area many consider Harvard's best. Led by senior safety Cecil Cox, who has picked off six passes, the Harvard defensive secondary has consistently come up with the big play and has largely made the Crimson as successful as it has been. The unit is extremely aggressive, but it hasn't been burned often.  *  DEFENSIVE SECONDARY: Steve Penders, Eugene Profit, Jay Ruffin and Mike Tjarksen. Safety Tjarksen leads the unit with four pass interceptions. Overall, Yale is 4 on the turnover ratio, while Harvard is 15. Cornerback Profit is a converted wide receiver. Since most teams can run successfully against Yale, this unit hasn't really been tested.