The Wisconsin media guide says Ron Dayne is an agricultural journalism major, but the big fella showed an affinity for math against Northwestern.

Needing to average 161 yards a game over his final three contests to break Ricky Williams' all-time NCAA Division I-A rushing record, Dayne rumbled for 162 yards on 35 carries to stay right on track. With games against Purdue and Iowa left on the schedule, Dayne needs 321 yards to break the record.

In his career, Dayne has gained 518 yards in five games against Purdue and Iowa. The Hawkeyes held him to 24 and 62 yards in two of those games, but this year's Iowa defense doesn't have nearly the teeth it did in 1996 or '97. Last season, Dayne rushed for 164 yards against an Iowa team quickly sliding into mediocrity.

The rest of the field didn't do anything remarkable to move up in the rankings. Joe Hamilton had a typical Joe Hamilton day (305 total yards) and Georgia Tech finally won easily, Drew Brees and Purdue won a game they were supposed to and Chad Pennington led Marshall to another blowout win. The only candidate to hurt his chances was Alabama's Shaun Alexander, who missed the game against Southern Miss due to an ankle sprain.

Here's a look at our top five following last Saturday's action:

RON DAYNE -- WISCONSIN		STATS
1.	Breaking it down: Had no trouble finding running room against Northwestern, No. 83 in the nation in run defense. Left on Wisconsin's schedule are Purdue (No. 30 in run defense) and Iowa (No. 107).	Opponent at Northwestern Season	Car-Yds 35-162 244-1,396	TD 2 17
JOE HAMILTON -- GEORGIA TECH		STATS
2.	Breaking it down: Showed no rust from his week off, leading Georgia Tech to its easiest win in weeks. Hamilton called it "a fun day."	Opponent vs. N.C. State Season	Cmp-Att-Yds 16-26-212 Rush-Yds 11-83 118-178-1,883 97-463	TD-INT 3-1 0 17-5 6
SHAUN ALEXANDER -- ALABAMA		STATS
3.	Breaking it down: A sprained ankle kept him out of the game, although he did suit up. But he's running out of chances to make his case -- especially with Dayne motoring along.	Opponent vs. Southern Miss Season	Rush-Yds   Rec-Yds   191-1,032 18-264	TD     18
DREW BREES -- PURDUE		STATS
4.	Breaking it down: Guided a controlled Boilermaker attack to victory after throwing for 522 yards and six TDs last season against Minnesota. He also showcased his mobility by picking up 47 yards on the ground.	Opponent at Minnesota Season	Cmp-Att-Yds 28-41-283 250-406-2,995	TD-INT 2-0 23*-9 *includes two rushing TDs, one receiving TD
CHAD PENNINGTON -- MARSHALL		STATS
5.	Breaking it down: Kept the Thundering Herd rolling through the Mid-American Conference with his fourth 4-TD game of the season and Marshall's 12th straight win.	Opponent vs. Northern Illinois Season	Cmp-Att-Yds 26-33-288 184-281-2,589	TD-INT 4-2 26-9