Can one serve overhead like Tennis?
Yes you can serve overhand, but no good player consistently does that. At the novice level it can be an effective serve as the pace of the ball can make the ball very difficult to return. This is especially true if the player has a weak backhand. At the better levels a good player will just put this ball away for a straight drop or drive. The rules on excessive swings The short answer is: Warning, followed by a Stroke next time. The longer answer is: 12.10 The Referee shall not award a stroke to a player who causes interference with an excessive swing. (G15) 17.2 Offences with which the Referee shall deal under this rule include audible and visible obscenities, verbal and physical abuse, dissent to Marker or Referee, abuse of racket, ball or court and coaching, other than during the interval between games. Other offences include significant or deliberate physical contact (Rule 12.12.1), excessive racket swing (Rule 12.4), unfair warm-up (Rule 3.2), late back on court (Rule 7.4), danger