Which side of the ping pong racket has more spin red or black?
It depends. The most important point is that the other player has the right to check which side has more spin. 1) “Table tennis regulations allow different surfaces on each side of the racket. The different types of surfaces provide various levels of spin or speed, or in some cases, nullify spin. For example, a player may have a rubber that provides much spin on one side of his racket, and no spin on the other side of the racket. By flipping the racket in play, different types of returns are possible. To help a player distinguish between different types of rubber used by his opposing player, international rules specify that one side must be red while the other side must be black. The player has the right to inspect his opponent’s racket before a match to see the type of rubber used and what colour it is. Despite high speed play and rapid exchanges, a player can see clearly what side of the racket was used to hit the ball.” Source and further information: http://en.wikipedia.org/wiki/Ta
