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Dec 09 2020

Stat of the Week | December 9, 2020

Every week, Tennis Analytics dives deep into the data, bringing you a stat of the week to help you understand tennis better and become a little smarter.

In December, we will look at junior data from the 2018 and 2019 Junior Orange Bowl, featuring some of the world’s top young players.


Stat of the Week: 14%

At the girls under 12’s and 14’s level, the match winner is noticeably better than the loser on both 1st and 2nd serves.

The difference in win percentage is 14%!

In fact, the match winners’ 2nd serves are more effective than the losers’ 1st serves.

The actual 1st serve percentage is similar for both match winners and losers.

  • Girls 12’s: Winner makes 64% of 1st serves. Loser makes 62%.
  • Girls 14’s: Winner makes 63% of 1st serves. Loser makes 59%.

More serve data for these age groups below.


G12 & G14 Serve
G12 & G14 Serve Win %

Point of the Week

The 12’s and 14’s are a key period in player development for juniors.

The importance of the serve as a determinant of winning and losing is indisputable. Players and coaches should be investing a significant part of practices to ensure that technical elements are not overlooked.

  • A wealth of information on serve technique is available at www.GreatBaseTennis.com.

Coaches should also use video instruction to teach the serve. Learn how in our Technical Analyst Certification Course.


Photo of the Week

Victoria Azarenka’s backhand.

Victoria Azarenka’s backhand.

Written by Warren Pretorius & Will Boucek · Categorized: Stat of the Week

About Warren Pretorius & Will Boucek

Each post is written by Will Boucek, in collaboration with Warren Pretorius.

Warren is the founder & CEO of Tennis Analytics. He is a USPTA Master Professional, speaker, and strategy coach for ATP & WTA pros.

Will is a writer and content strategist for Tennis Analytics. Will is also the founder of The Tennis Tribe and Tennis Tribe Marketing. He played college tennis and has over a decade of coaching experience.

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