It varies a lot from WR to WR, depending on things like their work ethic and their skill set. For instance, guys like Marvin Harrison and Terrell Owens are 34, 35, and nobody's concerned because speed was never the biggest part of their game (because speed is the first thing you lose). On the other hand, if Randy Moss was 34 instead of 30, I'd be extremely worried. He's always relied a lot on his speed, *AND* he's never been much of a nose-to-the-grindstone, hard-working type (and those are generally the guys who stave off age the best). Terry Glenn is another guy who, at 33, is starting to get up there in years, but I'm not really worried about yet. On the other hand, Galloway is 35 and will turn 36 halfway through the season, and that's a lot more worrisome. 36 is generally the end of the line unless your name is Jerry Rice. Only 4 times in history has a WR had 1,000 yards receiving in a calendar year where he turned 36 or older (Jerry Rice x 3, Jimmy Smith x 1). Only 5 times in history has a WR had 7 TDs in a calendar year when he turned 36 or older (Jerry Rice x 4, Charlie Joiner x 1). Only 3 times in history has a WR posted 140+ points in a calendar year where he turned 36 or older (Jerry Rice x 3). Only 12 times has a WR scored even 100 points in a calendar year where he turned 36 or older (Jerry Rice x 5, Charlie Joiner x 3, Chris Carter x 1, Jimmy Smith x 1, Tim Brown x 1, James Lofton x 1). And remember, 100 points is basically nothing- 100 points wouldn't have landed a WR in the top 36 in any of the past three seasons. Of the 48 WRs who have played past 36, only 12 times have they finished even as a borderline WR3 (take out Jerry Rice and suddenly that's only 7 times out of 29, or less than 25% of the time).
Basically, history has not been kind to WRs who turn 36 before the season ends.
