Last week was a tough week for Peyton Manning, as he was released from the Indianapolis Colts and started a all-out frenzy in the football world with over a dozen teams trying to sign him up. Now, it seems the field has narrowed a bit.

This weekend, Manning visited with the Arizona Cardinals and the Denver Broncos, and according to various sources, these two teams are the favorites to sign Manning so far. Manning has not signed any contracts yet, or made a definite selection, but it's becoming unlikely that he will make his decision by tomorrow, when the other free agents begin their league year.

Although Arizona and Denver are the favorites right now, they are certainly not the only ones vying for Manning. Sources indicate that there could be independent talks with Manning and the Miami Dolphins, and there is also the possibility of Manning talking with the Tennessee Titans. Some of Manning's other "suitors," namely the Seattle Seahawks and the Kansas City Chiefs, were not able to get Manning to visit are are no longer considered options.

There's still time for Manning to make a decision, but in the meantime, there's still plenty of questions to be answered. First and foremost, will Manning be well enough to play next season? Secondly, if it does come down to Arizona and Denver, what do you suppose is going to happen to Tim Tebow if Manning picks Denver? And what about the other teams who are interested, but we have yet to here from? This "Manning Mania" is far from over, but the field is slowly getting smaller and smaller.