It's different for each player, but most WRs hit the wall at some point in their 30s and almost no one makes it past age 35. The peak ages for WRs are 25-29, and on average WRs start to decline around age 30, but it's not that uncommon for a WR to have a big year at age 34 or 35.Here is a count of the number of 1000-yard receiving seasons for WRs at each age, from 1988-2010:
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RB age # 1000-yard seasons21 122 723 1424 3025 4526 4827 5128 4229 4330 3831 2832 2233 1234 1635 1136 337+ 2
The numbers would mean more if there was a percentage of players that hit 1,000 yards. For example, if there were only 12 seasons played by 35 year old receivers and 11 of them hit 1,000 yards that would be a huge percentage. If there were 51 times a 27 year old hit 1,000 yards but 510 total seasons by 27 year old receivers, that would be a low percentage.
I think these numbers do a good job of showing the general pattern of aging. There are other ways to look at the numbers that might be better, but I don't have them handy so these should do for a rough sketch of age-related decline.I don't think that dividing by the total number of WRs is the best way to look at the numbers, since there are a bunch of backups and special teamers who won't hit 1,000 yards and aren't on the fantasy radar; why should it matter if most of them are relatively young? Looking at the decline years (age 30+), pretty much any WR who has 1,000 yards one season sticks around to play the next season, so when you see fewer 1,000-yard receivers at one age than at the previous age it's because some receivers tried to play but declined.With veteran WRs, fantasy players mostly aren't looking for breakouts, we're looking for whether WRs who have already put up good numbers will be able to keep it up. So maybe the best way to run the age comparison would be to see, out of the receivers who went for 1,000 yards at age x, what percent had 1,000 yards again the next season. Or, what about those who were coming off 2 straight (or 3 straight) 1,000-yard seasons? How safe is a consistent top WR who's turning 33 (like Reggie Wayne), compared to one who's turning 30 (Roddy White) or 28 (Greg Jennings)? Or, what about WRs who had back-to-back 1,000-yard seasons and then a down year - how likely is a bounce-back season at each age? As I said, I don't have those numbers. But my guess is that WRs in their early 30s who have been playing well and haven't shown any warning signs (besides their numerical age) have a pretty good shot to keep it up another year (although they're a bit riskier than younger WRs). But once an old WR shows signs of decline then you should watch out, because bounce-back at that age aren't likely.For comparison with the WR numbers that I gave, here are the same numbers for RBs. This is a count of the number of 1000-yard rushing seasons for RBs at each age, from 1988-2010:
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age # 1000-yard seasons21 822 2523 3424 5325 4426 4627 4628 3529 2530 1631 932 533+ 0
It looks like WRs decline about 2-3 years later than RBs. Age 30 for a WR is like age 28 for a RB, WR age 33 is like RB age 30, and WR age 35 is like RB age 32.