With Brett Favre retiring on Tuesday, I took three minutes to reminisce on his legendary career, and immediately pondered the impact of his retirement on the fantasy value of Greg Jennings. Jennings has only been in the NFL for two years, but has shown the ability to eventually become one of the best receivers in the game. His combination of size and speed gives defenses headaches and he is considered one of the best after-the-catch playmakers in the game.

But a receiver is only as good as his quarterback, and Greg Jennings has only known one passer throughout his brief career. He has been lucky to have had one of the all-time greats throwing to him. Now that Favre is gone, how effective will Greg Jennings be with Aaron Rodgers at the helm?

I have been fortunate enough to reap the benefits of having Jennings on my fantasy football team each of the last two years. In ’06, I picked him up mid-season after he put together a string of impressive games. In ’07, he somehow went undrafted after 14 rounds of a 12-team league, and I added him in Week 3.

Here is why you should not be worried about Greg Jennings’ performance next season: Yards After Catch. Jennings was tenth in the NFC in YAC in ’07 with 394 in only 13 games. Jennings has displayed ridiculous athletic ability in his first two seasons, allowing him to not only get open, but also create running room after making the catch.

And who else is Aaron Rodgers going to look for when under pressure? Donald Driver is 33 years old and entering his tenth NFL season, and first without buddy Brett Favre. Despite being named to the Pro Bowl in 2007, he caught only 2 touchdown passes, a stat that is essential in fantasy leagues. Driver’s role as a deep threat has been taken over by Jennings, and Driver is becoming more of a possession receiver.

Can any non-Packers fan even name another Green Bay receiver? You can’t say Koren Robinson either because you only know his name from his multiple alcohol arrests and other various confrontations with the law. There are no other receiver threats for Green Bay, meaning Jennings is the go-to-guy for Aaron Rodgers.

But maybe I’m jumping the gun here anyway. I mean, Favre has only been retired for a day and training camp is a full four months away…plenty of time to change his mind.