As a senior, he earned second-team All-State Class 3A and first-team All-District honors, registering 98 tackles, 20 stops behind the line of scrimmage, eight sacks and four pass deflections.

He was an honorable mention All-State and first-team All-District selection as a junior after he posted 121 tackles, 14 stops for loss, eight sacks and seven pass break-ups for a defense that allowed only 101 points in 2000.

Also a standout in track and field, Robison was one of the nation's top discus throwers and shot putters, winning both events at the district, regional and state meets as a senior.

[1] He still holds the Texas high school record in the discus throw at 65.61 meters (215 feet 3 inches).

At his campus workout at the University of Texas, he ran 4.67 in the 40-yard dash, posted a 470-pound bench press and 345-pound power clean.

In Robison's final season at Texas, he was Honorable Mention All-Big 12 Conference, and battled through a rash of injuries, but still managed to start in 10 of 12 games at right defensive end.

Robison suffered a deep right knee and patella tendon bruise, and a quadriceps muscle strain, that sat him out for two games.

In track and field, Robison finished second in the NCAA Outdoor Championships in the shot put with a career-best throw of 20.25 meters.

In his professional debut against the Atlanta Falcons in the season opener game, he notched a pair of sacks on quarterback Joey Harrington.

[11] With Jared Allen established as the starter at the right defensive end spot, Robison saw action in 15 games as his primary backup.

In week 15, he notched his second sack and first forced fumble of the year when he knocked the ball free from Kurt Warner in the win at the Arizona Cardinals.

Robison competed in the shot put during the 2009 off-season, finishing first at a meet at the University of St. Thomas in Saint Paul, Minnesota.

Robison had a career-low 10 tackles on the season but also tied a then career-best with 4.5 sacks, the same mark he had his rookie year and ranked fourth on the team with 13 quarterback hurries.

After replacing Edwards in the second half of the game at Washington on November 28, he notched a sack of Donovan McNabb in the Vikings' 17–13 win over the Redskins.

Following the departure of Ray Edwards in 2011, Robison became a full-time starter and had a break-out year, starting all 16 games at left defensive end and recording then career-highs in tackles with 44, sacks with 8.0 that ranked second on the team behind Jared Allen (who had a league-best 22.0) and forced fumbles with 3.

[14] Robison again spent his second season as full-time starter at left defensive end opposite Jared Allen.

As one of the most unknown pass-rushers in the league, he earned a spot on USA Today's All-Joe Team, honoring the unsung players in the NFL.

In the week 2 loss at the Chicago Bears, he scored his first career touchdown when he recovered a fumble from Jay Cutler which was forced by Jared Allen and returned it 61 yards.

Robison started all 16 games for the third time in his career and tallied 4.5 sacks on the year, with all of those coming in an 8-week span.

Robison started at left defensive end the first game of the season at the Tennessee Titans and was credited with two tackles and a pass defended.

In week 2 against the Green Bay Packers, Robison strip-sacked Aaron Rodgers from behind in the fourth quarter, causing him to fumble the ball for the second time in a game where Minnesota totaled five sacks for combined losses of 33 yards and forced a career-high three fumbles that helped the Vikings open their new stadium with a win.