Where is the spot of enforcement?

[wv ref]

Here is the play, where would you have the ball?

5. Following a TD, place kicker A49 is roughed during the successful try and Team A elects to
enforce the 15 yard penalty on the succeeding kickoff. The kickoff from the 50 is high, muffed
by R27 at the R-1 and rolls into his EZ. R 27 slips and falls, gets up and "hearing footsteps",
panics and bats the loose ball over the end line. Ruling?

[Hawkeye]

Batting does not give enforcement instructions in the statement of the penalty, therefore it is governed by the Three-and-one principle (2-33, 10-2-2-c).

The basic spot on a free kick is the previous spot (10-2-2-d-4-a)

The status of the ball is still a kick since muffing a kick does not change it's status. (2-11-2)

The kicking team (Team A) is in possession of the ball until Team B gains possession (2-4-a-b-1).

So this is a foul governed by 3-and-1 that was committed by the team not in possession, which means it is enforced at the basic spot, the previous spot. (10-2-2-c-3)

The result after enforcement would be A K/O on the B-35.

Note: The result of the play itself is a touchback, since the status of the ball is still a kick and muffing a kick does not change the impetus, so Team A is responsible for the ball being in the endzone and the ball becomes dead out of bounds behind the goal line. 8-6-1-a, 8-7-2-a

[InsideTheStripes]

Illegal batting is a 10-yard penalty. 

Wouldn't the ball be kicked at B-40 if the penalty is accepted?

[Hawkeye]

Yep, I keep forgetting that!

A K/O B-40