Voight
#winning
Barry Sanders pretty easily for the NFL.
Sanders is second only to Michael Jordan (the first time) for shocking retirements.
I don't really see the argument for Luck over Sanders to be honest.
Jordan's was shocking at the time but with what we know now, its not that surprising. Atlantic City Mike had to take a break without the negative publicity.
The shock of Sanders retirement doesn't make that much sense to me. Obviously he was still a very good player, but he was 30 years old in his last season, to be 31 the year after if he played. His last season he was the 5th oldest RB in the league (with the oldest being 32) and none of the 4 older RBs had more than 500 yards rushing. He had a steep stepback his last year even if it was still very good, and most likely just got out before a big fall-off. RBs are so different than any other position for how quickly they fall off.
This and to me Megatron was more shocking.
Lions weren't going anywhere when Sanders retired.
Now the Stafford-era Lions aren't exactly an elite team but there was at least some potential there. Megatron had a solid QB who wasn't retiring or leaving anytime soon so there wasn't exactly a prime reason to retire. Still had plenty of productive years left too.