American Football Rules IFAF Approved Ruling 3-3-2:VII

VII. Team A kicks off to start the game and the kick receiver (a) makes a fair catch; (b) first touches the ball when he recovers it with his knee on the ground. RULING: (a) and (b) No time
runs off the clock. Team B will have first and 10 with the game clock reading 12:00. [Cited by 3-3-2-a]