So here is my list of the top 5 RBs in fantasy this year. I will reason for each below.
1. Lesean Mccoy
2. JaMaal Charles
3. Matt Forte
4. Adrian Peterson
5. Marshawn Lynch
So right off the back, if you pay attention I prefer one thing. Having a productive offense, and being dual-threat.
1. Lesean Mccoy doesn't face any of the problems that normal RBs at his level face: Stacked defensive lines, Carrying the offense, Being one dimensional, etc. Being in Chip Kelly's offense means that he will not have to face stacked lines, and even on passing downs will be a major contributor to the offense. He is by far the most important player in the entire offense, especially with desean jackson gone, and his numbers will reflect that by him having very consistent, high numbers, which is exactly what you want out of the first pick.
Jamaal Charles is very vital in the chiefs offense, and him being the teams best running back and wide receiver really makes a big difference. With a game manager-type quarterback in alex smith, charles is literally hard wired to put up huge, consistent numbers, just as he did last year.
Matt Forte is a dual threat back in an absolutely beastly offense. Nobody can put 8 in the box against the bears, as alshon jeffrey and brandon marshall will burn them every time. This means forte will see multiple big runs every game against the lax linebacker play and big time blitz packages. Forte also will get tons of receptions, with the safeties dropping to take jeffrey and marshall he will get a lot of checkdown yardage and many designed screens to burn the deep safeties.
So on to number 4.
Adrian Peterson
Adrian has hit the hump. The proverbial brick wall that every elite back in NFL history has faced and been defeated by, with very, very few exceptions. Adrian Peterson is a very amazing running back, but he is in no way immune to the incredibly remarkable stat drops found at and after the age of 29 for running backs.
Lets look at the past running backs that have hit this age at a high level.
of the 16 backs with more than 2,000 carries before age 29, only 4 had a 1,200 yard season after age 29. That group includes 8 hall of famers, including Marshall Faulk, Barry Sanders, Jim Brown, and Walter Payton. Heres some stats on various running backs, and this rapid decline post-age 30.
Jerome Bettis:
age 25 26 27 28
29 30
yds 1665 1185 1091 1341
1072 666
There was only one running back who ran for more yards in a span of two seasons at ages 27 and 28, and he suffered even more.
Shawn Alexander:
age 26 27 28
29
yds 1435 1696 1880
896
Do you see the pattern? lets go further.
No two RBs have had more production in their first seven years in the nfl than
Ladanian Tomlinson and Eric Dickerson. Both of them had their last 1,000 yard seasons at age 29.
This all says something. Adrian peterson is falling out of his grace. Not only is he dealing with his age, but he also has to deal with nearly constant eight man boxes, due to the fact that he IS the offense, and the vikings total lack of any passing game means that he will struggle to put up consistent numbers against solid run defenses he might face.