Locke's first three punts were fine, with two downed inside the 10 and another that went 48 yards. His last two weren't as good, going 39 and 38 yards, respectively. Frazier said there's an adjustment for Locke in the speed of the game and the different schemes that opponents will try against him.
But consistent punting, Frazier said, is key to the Vikings' success.
"We are structured a little bit different than some NFL teams, and we win a lot based on field position and not turning the ball over, running the football well and playing good defense," Frazier said. "Special teams are a big part of it as well. That position for us has a lot of weight, but we are confident Jeff can get the job done."
Locke said he punts 70 to 80 balls early in the week, then tapers toward game day. He said the problem Friday had to do with how he dropped the football in the punting motion.
The Vikings have two more practices today before breaking camp. The team will travel to Buffalo on Thursday for the game Friday. ... Rookie linebacker Michael Mauti was held out of practice because of a sore knee. Defensive end Christian Ballard (groin) also was absent. ... Rookie defensive tackle Anthony McCloud appeared to injure his left knee, though he came back to the sideline before practice ended.