I've been around bowling since I was 5, I've had a few balls to crack do to being left out in a car over night. Wednesday I went out to a local house to bowl a few games and noticed one of my balls has cracked around the pin, not sure what caused this as the ball is always in the bag. I carry 4 ball 3 being Quantum's and the other a hammer. I don't bowl every week although some times I wish I did. Should I pull the ball with the crack around the pin out and swap it for one of my other balls? In cause you wonder what I have, I have a quantum leap, navy quantum, quantum elite(crack at pin), and a sledge hammer. Just about all the balls have the same amount of games on them 20. I have no problem swap one ball for another as I have a few others thats pretty good from a omega dry to a amf xs.