NFL fans' questions are finally answered

Each Saturday, ESPN Stats & Information will answer statistical-related college football questions posed via Twitter (use the hashtag #AskESPNStats). Feel free to send your questions along.

Jason Witten

WittenWhich Tight End has the most receptions over the past 4 years? – asked by @jimmyh740

Jason Witten, who leads all tight ends in receptions (348) and yards (3926) in the regular season from 2008 to 2011. Witten is sixth among all receivers in receptions and 13th in yards over that span.

What's the avg NFL conversion rate when teams go for it 4th&short. What is it when they pass compared to run? – asked by @MastersAlanJ

Over the past five seasons, teams have converted just over 64 percent of 4th-and-short attempts (2 or fewer yards to go). They’ve converted 54 percent of pass attempts and 67 percent of rush attempts on 4th-and-2-or-fewer.

Tom Brady

BradyWhat was Tom Bradys completion rate and passer rating last year when he threw the ball 10+ yards in the air? – asked by @ayetskis

Tom Brady completed 53.3 percent of passes of 10 or more air yards with a 96.8 Total QBR, both of which were good for 5th highest in the league in the 2011 regular season. In the postseason last year, Brady only completed 47.2 percent of such passes with a Total QBR of 30.8.

What is the record of teams starting rookie QB's making their first start over the past 10 years? – asked by @trav_morris

According to the Elias Sports Bureau, teams are 32-72 (.308) since the start of 2002 when their QB is making his first career start.

If he's a rookie making his first career start, the record is 16-34 (.320).

Does winning your season opener provide a significant indication towards making the playoffs? – asked by @bryanshaffar

Since the postseason expanded to 12 teams in 1990, 181 of 264 (69%) of playoff teams opened the season with a win. 83 of 264 (31%) opened with a loss. Over that span, 53.9% of teams to start 1-0 reached the postseason while just 24.6% of teams starting 0-1 made the playoffs.

who has the best QBR when team is trailing in 4th quarter? – asked by @Paul_Scales23

Drew Brees led the NFL with a 92.0 Total QBR in the fourth quarter and trailing during the regular season last year. Since the start of 2008, Vince Young has the best regular season Total QBR (85.2) in the fourth quarter and trailing.

Tim Tebow By Quarter Last Season (Including Playoffs)

What are Tebow's number in the 4th quarter/OT compared to all other quarters of a game? – asked by @matt_letterman

Tebow certainly played better in the fourth quarter and overtime last season than he did in the first three quarters, with a much better completion percentage and accounting for just one fewer touchdown.