Maybe no one is more qualified to judge pass catchers than Vikings wide receivers coach George Stewart, who is in the midst of his 24th season coaching in the NFL.
He worked with Jerry Rice and Terrell Owens in San Francisco, helping Owens to be selected to three consecutive Pro Bowls from 2000-2002. He also mentored Falcons star Roddy White during White's first two seasons in Atlanta (2005 and 2006), when Stewart was wide receivers coach there.
The thing that makes a Hall of Fame-caliber receiver, Stewart says, is that they have qualities that separate them from other greats, a quality he believes is apparent in Vikings star Percy Harvin.
"It's hard to compare Percy, and I'm not a person who likes to compare, but for what he's doing for our football team right now, he's doing an outstanding job," Stewart said. "He's such a versatile player, as you know. He does a great job of returning kicks and as a receiver."
While Harvin has played multiple roles for the Vikings this season, including rushing for 73 yards and a touchdown and also posting 492 kickoff return yards and a touchdown, it's at wide receiver where he has truly put things together.
Harvin is on pace for more than 1,300 yards receiving and 121 receptions. Those projections would surpass his previous career bests -- 87 receptions and 967 yards in 2011 -- by a wide margin.
"I've coached a lot of great ones, Jerry [Rice], Terrell Owens, Tim Brown, a lot of people know those types of guys are all great football players because they all were different and all brought different things," Stewart said. "Percy brings something different than those other guys had, because he has so much toughness and so much raw speed.
"He's a real good one. It's hard not to disclaim, of course, because in different eras there are different players, different times, different people, but he is very special. All those guys are very special, he's another one. He has the complete package in a football player."