Why did I lose top spin during my tournament?

In tournaments your topspin doesn’t actually disappear. What usually happens is you’ve landed on a glitchy or “dead” spot on the course. When that happens, the ball guide won’t show the spin working the way it normally does. The fix is to move your target slightly around the landing area until the guide looks smooth again. Your topspin is still there, it’s just the course messing with it.