Singletary has been doing that for years. He almost never goes down after his first contact. He has tremendous balance and forward lean while he runs, and is suddle enough in his cuts to have the shake needed to get those extra yards.
I do agree Cook is the future. I don’t see it happening this year. What cook offers is something that Singletary DOESN’T have, which is the home run ability as we saw on display from James’ brother last Sunday.