Why Do Tennis Players Check The Balls Before Serving?

If you watch tennis, I am sure you noticed how most tennis players check the tennis balls before serving. They often ask the ball person for three or four balls in order to pick the balls where they wish to play the point with. This is a common practice in professional tennis and it has been around for a long time. Is there an advantage to be gained by picking the right tennis ball or is it just player’s superstition? Let’s find out.

The main reason why players check balls before they serve is to pick the smoothest balls – to maximize serve speed. As the match goes on, tennis balls get fluffier and slower. Another reason is to use the time between points to concentrate. Tennis players are usually very superstitious, and picking the “right ball” can help players get in the zone. 

If you want to learn more, keep scrolling down, we have more information to share with you.

Ball Changes in Professional Tennis

First we need to understand the ball changing rules in professional tennis. In the ATP and WTA level, the first ball change occurs after 7 games are played. After the first ball change, balls will be changed after 9 games for the rest of the match. The first change happens at only 7 games because of the 5 minute warm up. Keep in mind that 6 balls are always in play during the match. 

Physics Element

Choosing one tennis ball over another boils down to the hair. Newer tennis balls have smoothed hair which provides increased speed. Players want more speed on their serves in order to increase their chances of hitting an unreturned serve. After a few games are played, the balls tend to get fluffier and slower. However, this process doesn’t happen uniformly across all tennis balls in play. Points played with each ball are unique and the balls will age accordingly. For example, out of the six balls being used, two of them might be used during points where the rally was long. On the other hand, the other four balls might only be used in quicker points (aces, unreturned serves, winners or errors early in the point). This process is completely random, which makes the balls age unevenly during the course of the seven or nine games played. Because of that, players typically check for newer, smoother balls in order to gain an edge on their serve. 

Notice how the ball on the right is much fluffier than the one on the left.

Players like Federer and Roddick have stated that they prefer serving with smoother balls on first serves in order to maximize serving speeds. 

Rituals and Superstition

While picking a smoother ball provides a small advantage for the server, ultimately it is not the only reason why players check the balls before serving. Some are superstitious about their choice. A common practice is to choose to play with the ball they won the previous point with. In this case, some players believe that they are more likely to win the next point if they keep playing with the same ball. Once the streak is broken, they will pick a new ball. 

Another reason for players to check the balls before serving is simply as a concentration ritual in between points. Playing a tennis match is not only physically, but also mentally demanding and having rituals is a common practice among tennis players (like Nadal and his water bottles). The few seconds used to check the balls are a good time to breathe and think about the next point’s strategy. At the end, the reasoning behind checking the balls is unique to each player but it is not a crucial practice. Once asked about the subject, Andy Murray said “I just do it because everyone else does it” and added that he doesn’t see any difference between the balls. 

What The Pros Have To Say

To illustrate that the reasoning for checking the balls is completely arbitrary, we looked into some players opinions on this topic:

  • Roger Federer, arguably one of the best players ever, is not that picky when choosing a ball during his serve. However, he explains that he prefers the fastest ball for his first serve.
  • For Novak Djokovic, the process of selecting the right balls makes a difference on the upcoming point. When asked about the topic, he said “… I’m convinced in my head that it does”.
  • Caroline Wozniacki, former world No.1, it depends on her strategy. If her opponent has a strong return, she’ll choose the fluffiest ball to take the pace away from the ball. Besides, she says that it also depends on how she’s feeling at that moment.
  • Andy Murray is more about going with the flow. He explains that he spends some time selecting the right ball because everyone else does it as well. However, he agrees that there is actually no difference between balls.
  • Goran Ivanisevic, Croatian 2001 Wimbledon Champion, would also be somewhat superstitious when it came down to serving. He’ll usually ask for the same ball after making an ace.
  • Former player, Andy Roddick, who was known for his fast serve, said that he likes to select the ball that will travel the fastest, thus enhancing the speed of his already super fast serve.
  • The French player, Jo-Wilfried Tsonga, describe the process of selecting balls as an “obsessive-compulsive behavior” that many on the professional tour have. He suggests that even though he spends some time choosing the balls, it really does not make a difference.

Karue Sell

I’ve had some pretty cool experiences during my tennis career. I’ve reached the semifinals of the Orange Bowl U16 and as a junior, I ranked as high as #33 in the world. I have had wins over Dominic Thiem, Kyle Edmund, and Hugo Dellien (not sure how well I would do against them today, though). One of the coolest things I’ve done while playing was reaching the finals of the NCAA’s with UCLA, so I’m a great supporter of college tennis. I’ve won 3 futures since graduating, and I broke the top 400 on the ATP rankings. And most importantly, I have been to Pete Sampras’ house.

Recent Posts