EDEN PRAIRIE, Minn. -- Adrian Peterson's disappointment over his own performance last Sunday was mostly mitigated by the fact the Minnesota Vikings beat the St. Louis Rams by four touchdowns on the road. But when he watched the film of his 21-carry, 75-yard day, Peterson didn't leave with a glowing evaluation.

"It was kind of mediocre," Peterson said. "I really wasn't pleased in the way that I played. Overall, I really didn't beat myself up too much, because we pretty much blew them out. We got a 'W.' But on a personal level, there were a lot of things I was able to take from this game that I'll be able to adjust and do differently this week."

Peterson wouldn't elaborate on what he planned to change this week, but it appeared on Sunday he was still trying to find his comfort level with the Vikings' new running scheme, which employs more pulling guards and makes greater use of runs designed to hit a certain point of attack, rather than allowing Peterson to find cutback lanes.

The Rams' defense, though, is one of the league's best against the run, and Peterson could find more opportunities this week against a Patriots defense that ranked 30th in the league against the run last season and allowed 191 rushing yards in a loss to Miami in Week 1.

"In the second half, Miami used their no-huddle and kept coming at New England pretty fast and they got some creases and then they started getting some cutbacks," offensive coordinator Norv Turner said. "Like we’ve all been in games, it just went downhill for New England from there. If you watch that first half, you wouldn’t have thought that was going to happen."

According to ESPN Stats & Information, 11 of Peterson's 21 carries were to the right side of the Vikings' line and he gained 45 yards on those runs. The Dolphins ran to the right side of their line eight times last Sunday, gaining an average of 5.38 yards. If the Vikings are able to throw effectively enough to keep New England from stacking the box against Peterson, there should be plenty of opportunities for the running back on Sunday.

"To see other guys get involved, it's what I've been looking for, for a long time," Peterson said. "It's a breath of fresh air."