Adrian Peterson looked tired. At least he looked better than London's version of the Vikings' mascot.

That version was a small cutout figure outside the soccer fields surrounding Wembley Stadium, where the Vikings made their first London appearance on Tuesday.

The mascot was small and purplish, with what looked like goat horns. It looked like what the creators of Pokemon would have envisioned a Viking to be.

Peterson just looked worn out. He played catch with London schoolchildren and ran them through the drills. Here's what he had to say as the Vikings prepare for their game on Sunday at Wembley against the Steelers:

``I haven't had the opportunity to talk to anybody who's played over here, but we have a pretty good game plan to adjust to the time change and be ready to play on Sunday," Peterson said. ``It's just another game on the schedule, but it's definitely time for us to get a W. This is not a vacation for us. It's time for us to focus and win a game.

``It can be challening, but it's challenging for the other team, too. Equal playing field."

I was impressed by the attitude of the Vikings' players and coaches. They put on a good show with the kids.

Vikings coach Leslie Frazier said he didn't know if defensive backs Chris Cook, A.J. Jefferson and Jamarca Sanford would practice on Wednesday. That's bad news this week. The Steelers don't run the ball well. Their only hope offensively is for Ben Roethlisgberger to make big plays with his wide receivers, particularly Antonio Brown.

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Please check in at startribune.com regularly for updates, stories, columns, blog posts and videos from London, where Chip Scoggins, Mark Craig, photojournalist Carlos Gonzalez and myself will be covering the team all week.

I'll be on 1500ESPN at noon with Judd and Dubay each weekday, per usual.