Not finding a clear recovery aside, I was curious why we didnt win the challenge for recognizing that the player fumbled but I came across this rule: When an on-field ruling is down by contact, and the runner clearly fumbled the ball, the ball will be awarded at the spot of recovery to the team that recovers the ball in the immediate continuing action. If there is no clear recovery, the ruling on the field stands. Call on field stands = no winning the challenge