WHo is the last WR to be a WR-1 up until age 32?
Here are a few and some extend beyond age 32.
Jerry Rice - Rice teamed up with Rich Gannon to catch 83 passes for 1,139 yards and nine touchdowns, then went over 1,000 yards again in 2002 at the age of 40.
Keyshawn Johnson - In his first season for Dallas, he teamed up with quarterback Vinny Testaverde to grab 70 catches for 981 yards and six touchdowns, then in 2005, running routes for new quarterback Drew Bledsoe, led the team with 71 receptions. He finished out his career in Carolina in 2006, catching 70 more balls for 815 yards and four touchdowns.
Joey Galloway - at age 34 and began catching passes from a combination of Chris Simms (10 starts) and Brian Griese (six starts), logging his best season as a pro: 83 catches for 1,287 yards and 10 scores. He followed that up with two more 1,000-yard campaigns, catching passes from a mishmash of quarterbacks like Bruce Gradkowski, Simms, Tim Rattay, Jeff Garcia, and Luke McCown, and became the first player in Tampa Bay franchise history with three-straight 1,000 yard receiving seasons.
Terrell Owens - At age 31, In his first campaign with the Eagles, Owens teamed up with Donovan McNabb to catch 77 passes for 1,200 yards and 14 touchdowns.
Derrick Mason - a 31-year-old Mason signed with the Ravens for the 2005 season. In his first year with Baltimore, he paired up with quarterbacks Kyle Boller (nine starts) and Anthony Wright (seven starts) to catch 86 balls for 1,073 yards and three scores. Over the next five years, which spanned from his age-32 season to his age-36 season, he caught passes from Boller, Steve McNair, Troy Smith, and Joe Flacco, and went over 1,000 yards three times while averaging 77 catches a year.
Randy Moss - It was an incredible steal for New England, as Moss became part of one of the most devastating offenses of all time, pairing up with Brady to catch 98 passes for 1,493 yards and 23 touchdowns (his fourth time leading the league in touchdowns, and still the record for most scores in a single season). Moss caught another 69 passes for 1,008 yards and 11 TDs at the as a 31-year-old in 2008, then added another 83 balls for 1,264 yards and 13 scores in 2009 (again leading the league).
Anquan Boldin - With extraordinary physicality and a rare ability to box out defenders with his body, Boldin spent the next three years (his age-33, -34, and -35 seasons) ambling around the field while hauling in 237 passes for 3,030 yards and 16 touchdowns for San Francisco. The wily vet then signed in Detroit last year, and just kept on with his Energizer Bunny impression. Paired up with Matt Stafford, the 36-year old caught 67 passes and had eight scores.
Wes Welker - 32 year old - His first year in Denver didn’t disappoint: Welker caught 73 passes for 778 yards and 10 touchdowns in the most prolific scoring offense ever.
There are others, but I'm too tired to look it up.