I said "typically" receivers start slumping on or before their 9th year. Ok, you will find an outlier but it still holds true.
- Fitzgerald. Years 4-8 were his best years. His prime receiving years so to speak. He reached over 1000 yards in each of those years. However, in his 9th year he had 798 total yards, his 10th 954, and his 11th 784 total receiving yards. Yes he's having good year but his days s being a showcase #1 allpro are done. They are moving towards John Brown and Michael Floyd. The same goes for the other example I used : Roddy White. From years 3-8 Roddy White had over 1000 yards in each season. In his 9th season- 711 yards, his 10th 921 yards, and his 11th 316 yards.
- "these guys are not all the same" Well nobody is the same, but we know that most athletes (like all humans) have a physical and performance pattern. You could argue that a 65 year old man could be "stronger" than a 28 year old, and you might find an outlier here or there, but that is not the norm. The norm is that most humans will lose muscle mass, strength, and speed after a certain age. That's why conventional wisdom tells you not to extend an over 30 running back or receiver to a long term deal.
- Adrian Peterson as a player is on a total different level as Dez Bryant. Adrian is currently 18th on the all time total rushing yards, and with 2 more season possibly crack the top 5. With 3 seasons more season he could be #2, and it probably will be impossible for him to catch Emmit. Dez is entering his 7th season next year with 5705 yards not cracking the top 100. I believe that if he works hard, Dez might get to . #25 if he averages 1200 yard for the next 5 seasons.
- Oh btw Dez has only reached 100 yards once in the last 10 games he played including last years playoffs. Some will argue that it is "scheme". Others will counter that some fans have overestimated his talent. Talented athlete - yes. Excellent Receiver? Some will argue no
To summarize, my "point" is that Dez isn't a spring chicken anymore. We may have 2-3 more good/great season with him, and which is typical of receivers. We should start grooming a future #1 or at least consider drafting another premier WR.