Interference on the runner

[alabamabluezebra]

History always seems to repeat itself. I was working the same tournament last night as the 3rd base umpire. R1 at second, the batter hits a ground ball to the left of the SS. R1 runs into the SS who is attempting to make a play on the ball. I call "Dead Ball! Runner's out interference." The offense wants to protest, fans whining, and I'm reminded after the game that my interference call (the worst in softball history) cost them the game which they lost 8-1. This parent's daughter was the runner on second that caused the interference. It is a shame that parents sitting behind the fence are so much better at umpiring than those of us on the field.