Devontae Booker is averaging 115 yards per game so far this season in Utah's three wins and has scored four touchdowns.
According to Helfrich, Booker can cause the opposition all kinds of problems.
"He's fast, he's physical, he can block, he's a great back," said Helfrich of Booker. "He's not one of those guys that you'd say 'he's not good at this.' There's no phase that's a weakness...He never gets tackled by one guy, ever."
Helfrich hopes his defense, which is fifth in the conference in run defense giving up 140.3 yards per game can find a solution to the problem of Devontae Booker. Last year in Oregon's 51-27 win over the Utes in Salt Lake City, held Booker to 65 net yards and no touchdowns. However that was then and this is now and Helfrich knows containing Booker is a key for Oregon in beating Utah on Saturday.
Kickoff for Saturday's game is scheduled for 5:30 p.m. Pacific and the game will be carried on Fox.