I can not tell you how many times that I have seen Letang catch players who had a huge jump on him.
The fastest player I ever saw was former Pen K. Koltsov. He could skate faster than anyone, but he ZERO talent after that.
I have no idea why Craig Patrick took him in the first round. You never take a player in the first round who has never produced ever.
I wouldn't say Letang is an extremely fast skater, but I'd say he's an incredibly smooth skater. More than that, Letang combines agility with puckhandling skill. Lots of guys like Hagelin can fly down the ice, but fewer can fly down the ice while carrying a puck.
And yeah, I forgot about Koltsov. He could skate like the wind but he makes Grabner look like Denis Savard with the puck.
Have watched a few Blackhawk games this year, and Nick Leddy is one of the fastest defenseman I have ever seen. It seems like he can take the puck from his own blue line and be on a breakaway by the time he is on the opposing team's blue line.