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• The 40mm ball replaces the 38mm ball as the official ITTF ball on October 1. How will this change the sport, and how do you adjust to it?
• Blocking: Blockers can't use the speed of the ball to re-direct the ball at high speeds. Players must be "more active" when blocking – i.e. blockers must supply their own power, since the 40mm ball won't rebound out as fast.
• Off-table play: Since the ball slows down faster due to air resistance, players who play off the table will need more power. They will also have to adjust their instinct for how far they play from the table, since their natural instincts will now have them too far from the table.
• Service: There will be less spin on the serve. Therefore, placement will become more important. With the 38mm ball, players often serve crosscourt; with the 40mm ball, players will have to learn to add more variety to their placement.