Scouting: Purdue @ Northwestern

Purdue (2-2, 0-0) at Northwestern (5-0, 1-0)

When: 6:30 p.m. at Ryan FieldTV: BTN; Radio: WIND 560-AMSeries: Purdue leads 49-27-1Coaches: Danny Hope (7-9, second year at Purdue, 42-31 overall); Pat Fitzgerald (32-23, fifth year at NU)Players to watch: Purdue DE Ryan Kerrigan is listed in the school's official game notes as #8220;a holy horror. That might be right as the prime all-American candidate leads the nation with 3 TFLs per game and owns 25.5 sacks and 43 TFLs for his career. He also has forced 12 fumbles, which is 1 from the Big Ten record owned by Simeon Rice and Bob Sanders. With QB Robert Marve (knee) out for the year, redshirt freshman QB Rob Henry gets his first career start. The dual threat posted 70 rushing yards and 140 passing yards last week against Toledo.Northwestern junior QB Dan Persa holds steady as the FBS leader in completion percentage (79.4) while standing third in passing efficiency (184.61 rating). Jacob Schmidt (3 TDs in last two games) and Mike Trumpy (25 carries, 106 yards, 1 TD in last two games) will share the running-back duties. DE Vince Browne leads the Big Ten with 5 sacks.The skinny: Here goes nothing for the Wildcats. If they win this game under the portable lights, it'll be the school's first 6-0 start since 1962 and the eighth overall since NU began playing football in 1882. Northwestern's offense dominated last week, but committed 3 turnovers. Northwestern's defense couldn't make Minnesota one-dimensional. Purdue averages almost exactly the same on the ground (188.0 ypg) as in the air (186.3 ypg), so it'll be on the Wildcats to harass the inexperienced Henry into making some mistakes through the air.He said it: Pat Fitzgerald on Purdue QB Rob Henry: #8220;I think he's about a 4.4 (in the 40-yard dash) kid at quarterback. He's dynamic. He's been involved in just about every game plan.