Big Ten helmet stickers: Week 13

Posted by ESPN.com's Adam Rittenberg

Wow. A lot of big-time performances in the league this week, so a few more stickers than usual.

These guys saved their best for last.

Penn State QB Daryll Clark: As he promised, Clark got his swagger back in a big way against Michigan State. The junior passed for a career-high 341 yards and four touchdowns, marking Penn State's first 300-yard passing performance since Michael Robinson in 2003. Clark completed seven passes of 26 yards or longer as No. 8 Penn State crushed No. 15 Michigan State, 49-18, to reach the Rose Bowl. Penn State had a school-record 419 pass yards.

Purdue QB Curtis Painter: Painter ended a disappointing season on an extremely high note, completing 38 passes for 448 yards and five touchdowns in a 62-10 rout of Indiana. The fifth-year senior connected with five different players for touchdowns and moved into third place on the Big Ten's career list for total offense.

Iowa RB Shonn Greene: He capped a remarkable year by setting Iowa's single-season rushing record with 144 yards and two touchdowns in a 55-0 victory over Minnesota. Greene became the first back to eclipse 100 yards in all eight Big Ten games since Penn State's Curtis Enis in 1997. The junior should win the Doak Walker Award and might earn an invitation to New York for the Heisman Trophy ceremony.

Penn State WR Deon Butler: Butler had only three receptions, but all of them went for touchdowns, marking a career high. He had scoring receptions of 70, 59 and four yards and registered the third 100-yard game of his career (133 yards).

Iowa WR Derrell Johnson-Koulianos: Like many of his Hawkeyes teammates, Johnson-Koulianos had a huge night at the Metrodome, racking up seven receptions for 181 yards and a 29-yard touchdown in the third quarter. The sophomore came on strong in Iowa's final three regular-season games.

Northwestern defense: The Big Ten's most improved unit shut down the league's top offense, holding Illinois to a season-low 10 points in a 27-10 victory. Defensive end Kevin Mims (2.5 sacks, forced fumble) led the way as Northwestern held Illinois to 113 yards below its average.