For the fourth straight season, Adrian Peterson did not carry the ball in any of the Minnesota Vikings' exhibition games.

The question is, does it matter?

As Peterson has gotten older, he obviously is looking to conserve his body and isn't worried about getting any game conditions in before the start of the season.

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But in each of the last three years --€“ sans a preseason carry -- Peterson has not topped 100 yards in Minnesota's regular-season opener. In the five seasons Peterson did see action in an exhibition (or two or three), three of those times he rushed for over 100 yards in his regular-season debut and 98 in another.

Of course, those three 100-yard games also occurred in his first three years in the league, when his legs (and body) were fresher.

Maybe there's nothing to be made of it, or perhaps that preseason work does help after all, no matter your age. Here's the preseason and regular-season numbers of Peterson year-by-year.

2014

Preseason: Did not play

Opening game: 21 carries, 75 yards, 0 touchdowns at St. Louis

Season: 0 100-yard games, 75 total rushing yards

2013

Preseason: Did not play. Did start in the third game at San Francisco, but did not get the ball.

Opening game: 18 carries, 93 yards, 2 TDs at Detroit

Season: 5 100-yard games (first one in Week 2), 1,266 total rushing yards

2012

Preseason: Did not play

Opening game: 17 carries, 84 yards, 2 TDs vs. Jacksonville

Season: 100 100-yard games (first one in Week 4), 2,097 total rushing yards

2011

Preseason: 21 carries, 100 yards, 0 TD in 3 games (did not play in the fourth game)

Opening game: 16 carries , 98 yards, 0 TD at San Diego

Season: 3 100-yard games (first one Week 2), 970 total rushing yards

2010

Preseason: 17 carries, 54 yards, 1 TD in 3 games (did not play in the fourth game)

Opening game: 19 carries, 87 yards, 0 TD at New Orleans

Season: 5 100-yard games (first one in Week 2), 1,298 total rushing yards

2009

Preseason: 25 carries, 181 yards, 1 TD in 3 games (did not play in the fourth game)

Opening game: 25 carries, 180 yards, 3 TDs at Cleveland

Season: 3 100-yard games, 1,383 total rushing yards

2008

Preseason: 20 carries, 51 yards, 1 TD in 2 games (started, but did not touch the ball in opening game; did not play in the fourth game)

Opening game: 19 carries, 103 yards, 1 TD at Green Bay

Season: 10 100-yard games, 1,760 total rushing yards

2007

Preseason: 30 carries, 146 yards, 1 TD in 4 games

Opening game: 19 carries, 103 yards, 0 TD vs. Atlanta

Season: 6 100-yard games, 1,341 total rushing yards

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