11) How many points does a player have to win in order to win a set?
12) What type of court surface is used for the S Open?
13) From which country does tennis star Naomi Osaka hail?
14) At which major tournament was the tie-breaker first introduced?
15) What is the minimum age requirement to participate in professional tennis tournaments?
16) Who is widely recognized as the greatest men's singles tennis player of all time?
17) Which Grand Slam tournament is played on grass courts?
18) What is the scoring system used in a regular tennis match?
19) How many sets are played in a men's singles Grand Slam finals match?
20) What is the most prestigious non-Grand Slam tournament?