I am experiencing pain in my upper right thigh after stepping down on it the wrong way almost feels like I jammed something. This afternoon I was fine and went to pick up a new bowling ball and try it out. Did 4 frames and then the ball stuck causing to step down hard on my left foot. Went limping off the the lane. Can t put anyway weight on it without pain. It will be better in a day , however it will probably happen again if I step on it the wrong way.