Blocked punt recovery

[Purdue Pete]

Punt is partially blocked and goes straight up to around the line of scrimmage.  A defensive lineman attempts to field the punt but muffs the catch and the ball is loose.  Recovered by the kicking team.  Whose ball?

[JustRules]

13 hours ago, Impartial_Observer said:

Needed one last night. Pre-planned fake punt the coach told us about pre-game. Kicker is running to his left looked to me like he panicked and does some kind of half ass kick on the run with a potential tackler committed to tackling him. We all know where this is headed. The coach completely understood, but boy the fans couldn’t believe I missed that one right in front of me. 

The way I often explain that is was the action by the defender and attempt to block a kick or execute a tackle? If the former then it is roughing the kicker because he obviously recognized it was going to be kicked. If it's the latter then he expected him to continue to be a runner and was trying to tackle him. Unless it's really late it's usually better to pass on it.