Minnesota Vikings clamoring for backup quarterback Matt Cassel to replace Christian Ponder will get their wish Sunday in London - at least for one game.

The Vikings announcing Friday that Ponder has a fractured rib and will sit in favor of Cassel at Wembley Stadium.

Head Coach Leslie Frazier told the media Friday:

He's a tough, tough guy, but it probably wouldn't be wise to put him in that situation.

We have complete confidence that Matt will do a good job, our players are going to support him and he'll be the guy that will be leading us to victory on Sunday evening.

Cassel signed a two-year free agent contract this off-season. He's started 62 games in his nine-year career, with the New England Patriots and Kansas City Chiefs.

He told reporters:

I'm not really looking ahead, to be completely honest.

I just found out this morning.

For me, it's really about going out there, being accountable to my teammates and hopefully, getting out of here with a win this weekend.

Kickoff is noon Sunday from London.