[rbmartin]

FED game. I was HP. Runner advancing toward home. Throw beats him by several feet. Runner attempts awkward slide around F2. Ball dislodges following minor (non-malicious) collision. Runner never touches (or passes) plate. Both runner and U2 are just sort of laying there briefly. After a few seconds, F2 picks up the ball and tags runner.
What should my signal or signals should I have given?