https://www.titleist.de/teamtitleist/team-titleist/f/golf-balls/26980/prototype-ballsI tried the test titleist balls that were sent to me. I found that they might have been a little softer than the proV1 that I use. I still found that they seemed to roll out more or maybe I just thought so. I still have not found another ball that compairsen-USTelligent Community 10