Why would you eliminate the game where he got most his work? You are basing this on 7 carries on fresh legs over 3 games. Hardly enough body of work to say he can sustain a 4.3 YPC average. The guy is an unknown, he has proven nothing, he is a nobody.
.
That game is removed because despite the fact he ran for 3.0 average, he was the best Lions RB that day. That means the OL was shit and the OC called terrible plays that game.
The remaining games include one where he averaged 3.0 ypc (SD).
Seriously though, what is your demands of the guy? You are being absolutely unreasonable in bashing on him. I'm not saying he is All-Pro, but he was moving up into the #1 RB slot.
All I'm saying is I hope the guy can return and continue improving next year since he is out this year. Why is that so terrible to wish a Lions RB be good? He was improving and outside the Ari game in which he was the best Lions RB, he was averaging 4.3 YPC. Adding in that game he drops to 3.5 YPC. In all probability his end of year YPC would have been between those two numbers, but we unfortunately will not know due to his injury. He is worth bringing back next year instead of kicking him to the curb like he is garbage though.