The temperature of tennis balls plays a big role in their bounce! 🌡️ When it's warmer, the gas inside the ball expands, making it bounce higher. But in cooler temps, the molecules shrink, and the ball bounces lower. To ensure top-quality play, Wimbledon checks over 50,000 tennis balls every year, keeping them at a perfect 68°F for optimal performance! 🏆 facts fun fact sports