| Yes, it was only the preseason. But maybe Minnesota Vikings head coach Denny Green was right about quarterback Daunte Culpepper.|  |  |  | Culpepper threw for 751 yards and five TDs in the preseason. | 
 
Still, even with his impressive stats, Culpepper remains as the NFL's biggest mystery, writes ESPN.com's Tom Oates. Culpepper is one of many key figures who enter the 2000 season as unknown entities. Meet the NFL's other "Mystery Men" in our special slideshow.
 
Question of the Day: Top breakthrough player? ESPN experts' predictions
 ESPN.com's Power Rankings | User feedback
 
 
 Monday, Aug. 21
 Tom Oates: Are the Rams a fluke?
 Question of the Day: How far will the Rams go?
 Preseason power rankings
 ESPN experts' predictions for 2000
 
 Tuesday, Aug. 22
 John Clayton: NFL trends for 2000
 Question of the Day: Who's the biggest trendsetter?
 
 Wednesday, Aug. 23
 Chris Mortensen: The Jags' window of opportunity
 Mark Cannizzaro: The unpredictable AFC
 Question of the Day: Who'll win the AFC?
 Pro Football Weekly's previews of all 31 teams
 
 Thursday, Aug. 24
 Greg Garber: Redskins' game of high stakes
 Tom Oates: NFC's new trend -- first to first
 Joe Theismann: Hail to the Redskins' Chief
 Question of the Day: Who'll win the NFC?
 
 Friday, Aug. 25
 Tom Oates: Daunte Culpepper -- the NFL's mystery man
 Slideshow: NFL's other "Mystery Men"
 Question of the Day: Who'll be the top breakthrough player?
 
 Saturday, Aug. 26
 John Clayton: Teams who get (and don't get) the salary cap
 Web exclusive: Salary cap status of all 31 teams
 Frequently asked questions about the salary cap
 Darren Rovell: What is a capologist?
 
 Monday, Aug. 28
 Mark Malone: 10 things to watch for 2000
 ESPN.com's 10 best matchups of 2000
 Question of the Day: Which is the best game of 2000?
 
 
 Clayton Across America: 31 camps in 28 days
 Follow ESPN.com senior writer John Clayton around the league as he tours all 31 NFL training camps.
NFL Training Camp 2000
 Get the scoop on all 31 teams as well as each team's offseason review, preseason schedule and camp dates and sites.
2000 NFL weekly schedule
 The Super Bowl champion Rams open the 2000 season against Denver on Monday Night Football. We've got dates and times for every game.
 
 
 
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