~ g ~
Grand Slam: 
(1) One of four major tournaments played once a year - Australian Open, French Open, Wimbledon, U.S. Open, 世界四大锦标赛之一: 澳洲公开赛,法国公开赛,Wimbledon,和美国锦标赛
(2) Winner of all Grand Slam titles in a calendar year 在以上锦标赛中获胜的队伍 

groundies: 
  Groundstrokes 贴地球

~ h ~
head: 
  The portion of a racquet comprising the frame and strings 球拍的头部
hold: 
  To win a game as the server, to hold serve 发球制胜

~ l ~
league: 
  A group of tennis players competing against other groups or teams 比赛团队

~ m ~
mixed: 
  See "mixed doubles"
mixed doubles: 
  One female and one male play against one female and one male, sometimes detrimental to a marriage 混双

~ p ~
poach: 
  In doubles, to hit a ball (usually with a volley) that would normally be hit by another 在双打中,一方的一个队员抢先打自方的一个队员的球

~ s ~
seed: 
  In a tournament, the top players based on previous results 种子选手
side or serve: 
  To begin a match, the person who wins the toss can select to serve or which side to begin on 在上局比赛中,其中获胜一方可以选择自己发球或者决定由哪放发球的权利 

~ w~
wrong foot: 
  To hit a shot to the court of an opponent who is leaning or running the opposite direction 向冲向自己的对方选手猛打球