The biggest danger is that Walland's ability to scramble against the pass rush will force the Crimson to slacken its secondary coverage and allow Walland a field day through the air.

Up until this week, the Crimson has been able to play the pass an almost every single series, knowing that the only the most arrogant offensive coordinators would choose to run the ball against the best defensive line in the league.

Yet even anticipating the pass and helping the corners out with extra coverage, the Crimson's pass defense has shown gapping holes at times this season.

Harvard's zone coverage has allowed receivers to slip between into the holes all year, and the Crimson cornerbacks' fear of getting beat deep has allowed opposing wideouts too much room in front playing man-to-man defense.

Weaknesses in the secondary have permitted quarterbacks to nickel-and-dime their way to victory, gaining five to ten yards at a time and slowly working their way downfield.

With Harvard's defensive troubles against the pass, opposing teams have racked up an average of 243 yards through the air against the Crimson each game.

Even more troubling, the Harvard secondary has had its worst performances in games where the Crimson has effectively neutralized the rush.

In last weeks outing against Penn, Harvard surrendered 348 passing yards, despite knowing that Penn would be forced to throw the ball with its top rusher injured on the sideline.

With the Crimson secondary now facing the uncertainty of a quarterback who proved that he could run the ball for more than a 100 yards against Princeton last week, Walland may have the green light to throw bombs at will and nullify an advantage Harvard may gain by stopping the rush.

Walland has already thrown for over 2,000 yards this season and has racked up 17 touchdowns passing in the process.

More importantly, Walland has made smart decisions all season. Choosing to run the ball instead of deciding to throw potentially errant passes when under pressure, Walland has only thrown three interceptions all season. Harvard threw four interceptions against last week alone.

A major reason for Walland's favorable touchdowns-to-interceptions ratio is the Elis plethora of equally capable receivers.

Harvard, on the other hand, has been forced to rely on senior wideout Terrence Patterson more than it should some days. Yale has been able to spread the ball around to a multitude of targets and has five receivers that average more than 20 yards per game.

The problem with relying on a single receiver too much is reflected in the scores. Despite Patterson's three best performances of the season against Colgate (90 yards), Cornell (77 yards), and Brown (90 yards), Harvard lost all three.

With eight touchdowns and 614 yards on 46 receptions, junior wideout Eric Johnson still has more yards receiving this season than any of Harvard's receivers, but by no stretch of the imagination is he Yale's only threat.