What happens if you put a slightly dented tennis ball in warm water?

Since the ball is hermetically sealed, there is a constant mass of air in the middle. For constant gas mass, the combined gas law P * V / T = const is valid, where P is the gas pressure, V is the gas volume, and T is the gas temperature. The ball is lowered into warm water, the air temperature in it increases T, in order for P * V / T to remain unchanged, the numerator must also increase. The product of pressure and volume increases, the air pressure in the ball P and V should increase, and all irregularities will be squeezed out by this pressure. The ball will align.