match ball
noun [ C ] uk/ˌmætʃ ˈbɔːl/ us/ˌmætʃ ˈbɑːl/
UK (US game ball)（足球、橄榄球、排球等）比赛用球
the ball that is being used during a game of football, rugby, volleyball, etc.
Match balls are higher quality than those we use on the training ground. 比赛用球比我们训练用的质量要高。