Craig O’Shannessy grew up like another younger tennis enthusiast. He would run house from faculty on a daily basis, then run to the courts so he may get in as a lot play as imaginable earlier than the solar set.

There have been quite a few courts, together with 25 fabricated from grass, in his place of birth of Albury, Australia. The town of 47,000 in New South Wales used to be small, but it surely loomed huge in tennis historical past. Margaret Courtroom and Dianne Fromholtz honed their world-class video games there. And whilst the nice Australian tennis empire constructed via the rustic’s Davis Cup captain, Harry Hopman, had begun its decline by the point O’Shannessy picked up a racquet within the 1970s, the tradition across the recreation used to be nonetheless robust.

“Adults and youngsters went out and performed suits in combination all day,” O’Shannessy recalls. “There used to be no drilling, no courses. We simply performed till it used to be too darkish to peer the ball.”

O’Shannessy, like each and every self-respecting Aussie of his day, used to be a serve-and-volleyer. With out courses, his methodology used to be uncooked, however he knew learn how to conceal his weaknesses. His backhand volley grip used to be so unhealthy, he says, he discovered learn how to run round it and hit a forehand volley as a substitute—no longer a very easy factor to tug off whilst you’re speeding the online. 

“Thankfully, quickness used to be one thing I may do,” O’Shannessy says with fun.

Extra essential for his long term profession, O’Shannessy’s technical shortcomings additionally made him a prepared pupil of what used to be taking place at the different facet of the online.

“My sport wasn’t polished, so I needed to depend on technique,” he says. “I used to be at all times specializing in what my opponent used to be doing.”

Tennis’ resolution to baseball sabermatrician Invoice James, O’Shannessy embraces complicated stats and searches for opportunistic patterns in play. However he’s no longer protecting his standpoint below lock and key. The 53-year-old has been spreading his numbers-based gospel for years, operating with plenty of avid gamers and appearing no indicators of slowdown. (Craig O’Shannessy)

O’Shannessy, a lefty, wasn’t destined to be the following Rod Laver, however he used to be just right sufficient to play No. 1 at Baylor, the place he graduated with a journalism level in 1991. Confronted with a call between writing and training after school, he selected the latter. O’Shannessy believed there have been blind spots in tennis’ conventional training strategies, ones he felt he used to be provided to fill.

“Everybody’s philosophy used to be, ‘Simply fear about your personal sport,’” O’Shannessy says. “However successful suits isn’t almost about taking part in your sport. It’s about working out learn how to beat a particular opponent.”

Much more irritating for O’Shannessy used to be the knowledge—or lack thereof—that coaches and avid gamers depended on for his or her sport plans. 

“The statistics had been so primitive,” he says. “Everybody used to be guessing about what labored. Was once serve and volley lifeless? Will have to you hit extra forehands than backhands? I didn’t need to wager, so I began counting.”

O’Shannessy felt like he used to be onto one thing on the 1995 Australian Open, when a 17-year-old he used to be operating with, Dally Randriantefy of Madagascar, got here out of qualifying to succeed in the 3rd around.

“Her first-round opponent sliced her backhand, and she or he couldn’t stay it deep constantly,” O’Shannessy recollects. “I mentioned, ‘If she hits 3 backhand slices in a row, transfer in, as a result of certainly one of them might be quick, and she will be able to’t cross you with it.”

In a wonder, Randriantefy received that fit, and her subsequent one, earlier than dropping to eventual champion Mary Pierce. It used to be glaring to O’Shannessy that, opposite to standard tennis knowledge, a participant may move some distance with a scouting record and a method. Now all he wanted had been the numbers.

O’Shannessy performed NCAA tennis at Baylor, earlier than moving to training within the recreation. (Craig O’Shannessy)

This month, O’Shannessy will go back to the Australian Open. A lot has modified, in his profession and in training, since his step forward in Melbourne 25 years in the past. As an alternative of operating with a teenage qualifier, he’ll be a part of protecting champion Novak Djokovic’s training workforce. As an alternative of getting to wager what’s taking place at the courtroom, he’ll be armed with numbers that get extra detailed via the day. As an alternative of feeling like a lone voice within the statistical barren region, he’ll be at the leading edge of an information motion that can turn into tennis in the similar approach that it has reworked baseball and basketball.

Now 53 and residing in Austin, TX—along with his spouse, Kelly, and two kids, Rourke and Riley—O’Shannessy has grow to be the face and voice of analytics in tennis. Upbeat and gregarious, he defies the stereotype of the stat nerd. When he’s no longer drawing up combat plans for Djokovic and different professionals, he serves as a method guru all over Grand Slam declares, writes for the ATP’s web page, travels the sector handing over displays, and runs Mind Sport Tennis, the self-described “No. 1 Technique Website online.”

In keeping with O’Shannessy, you handiest have to take a look at ultimate yr’s Australian Open males’s ultimate, between Djokovic and Rafael Nadal, to peer the ability of analytics. Nadal got here into the fit having a look with reference to invincible, handiest to be dismantled via Djokovic in 3 fast units. Whilst Djokovic used to be rightly praised for his play, from O’Shannessy’s standpoint, there used to be extra to the efficiency than met the attention. 

The Serbian will have made it glance simple, “however a large number of paintings went into that fit,” says O’Shannessy, who joined Djokovic’s workforce as a tactical analyst in 2017. Their workforce pored over knowledge that informed them the place Nadal preferred to hit the ball and the place he didn’t, giving Djokovic a transparent thought of what he sought after to do.


TANDON: The position of analytics in tennis is on an extended, sluggish upward push


How did O’Shannessy get from Randriantefy to Djokovic? The street used to be lengthy, however two epiphanies helped him flip his theories into truth.

The primary got here in 2005, with the appearance of Dartfish video generation. The usage of a Dartfish recording, O’Shannessy may analyze a fit in higher intensity and specificity.

“We knew what number of winners and mistakes avid gamers hit, however now it’s worthwhile to see the place a participant made them,” O’Shannessy says. “Patterns started to leap out; you could see a participant make 10 mistakes from the similar spot. Tennis can appear to be chaos, but it surely’s truly the similar issues taking place over and over again.”

From cryotherapy to veganism to psychological coaching, Djokovic has left no stone unturned to find tactics to beef up. With O’Shannessy, he’s grew to become to special knowledge, and what it may possibly divulge in scouting fighters. (Craig O’Shannessy)

O’Shannessy started to imagine that a ways an excessive amount of emphasis have been placed on winners—and particularly unforced mistakes—and that the stat to concentrate on is the “compelled error.”

“Being concerned about unforced mistakes is protecting this recreation at nighttime ages,” he says. “Successful suits isn’t about taking part in very best tennis or getting yet another ball again. It’s about placing your opponent in puts the place he’s much more likely to omit.”

O’Shannessy’s 2d epiphany got here a couple of years later, when IBM, which creates statistical spreadsheets

of suits, started to incorporate a breakdown of rally lengths: what number of had been 1-Four pictures; what number of had been 5-8; what number of lasted nine or extra. O’Shannessy used to be struck via the truth that 70 % of issues had been within the 1 to Four shot vary, and that the participant who received the vast majority of the ones issues received the fit nearly all of the time. 

“In the entire research of tennis, we by no means thought to be rally duration,” he says. “We take into accout the lengthy rallies, but it surely had by no means hit me that, on reasonable, each and every participant will handiest contact the ball two times in some extent. Everybody trains to win lengthy issues; what we want to do is win the fast issues.”

In that sense, analytics—relying on how a lot you purchase into it—unearths the similar factor about tennis that it has published about basketball and baseball: persistence isn’t essentially a distinctive feature. In basketball, statistics have proven that the danger of making an attempt three-point pictures is well worth the praise. In baseball, the low-percentage house run swing has been prioritized over the reputedly extra smart base hit. O’Shannessy thinks the numbers display that tennis is due for the same shift. 

“We have now youngsters move out and hit one million balls in a row in apply and everybody is worked up, the children are glad, the oldsters are glad,” he says. “However that’s no longer what occurs in a fit. In the meantime, we don’t apply our serves sufficient and virtually by no means apply our returns, and the ones are the pictures we hit essentially the most.”

Ultimate yr’s Australian Open ultimate between Djokovic and Nadal used to be rapidly one-sided—a surprise to many, however no longer essentially to O’Shannessy. Djokovic rolled, the Aussie wrote at the ATP’s web page, “via doing precisely what standard knowledge says you shouldn’t do—play on your opponent’s very best shot… With Nadal at all times having a look to give protection to to the precise, Djokovic attacked to the left.” (Getty Pictures)

If consistency is overemphasized, in line with O’Shannessy, the attacking forehand is underemphasized. For him, top-of-the-line servers are those who use their serves to arrange their forehands—the “serve plus one,” because it’s identified in as of late’s lingo. Up to other folks love to look at Stan Wawrinka or Dominic Thiem uncork their one-handed backhands, it’s their forehands that do essentially the most injury. And whilst Djokovic’s two-handed backhand is well known, O’Shannessy’s knowledge presentations that his forehand is the simpler shot, and one he will have to be hitting extra ceaselessly.

“The Spanish device is ready hitting balls within the solar all day, however that’s no longer how Rafa wins,” O’Shannessy says. “He makes use of his serve and works the rallies so he can hit an offensive forehand.”

O’Shannessy’s device has produced effects. He helped mastermind Dustin Brown’s disillusioned win over Nadal at Wimbledon in 2015. He had a “come to Jesus” second with Kevin Anderson concerning the South African’s sport that at last resulted in his upward push into the Most sensible 10. Ultimate yr at Wimbledon, O’Shannessy helped Alison Riske disillusioned his countrywoman Ash Barty. At america Open, he helped information Matteo Berrettini to his first Grand Slam semifinal. Within the wake of his luck, different businesses, like Golden Set Analytics and Tennis Stat, have begun to provide statistical products and services to avid gamers in any respect ranges.

“The entire large guys are the use of knowledge research, they only don’t like to speak about it,” Alexander Zverev informed The Day-to-day Telegraph ultimate yr. “It’s a large a part of the sport now.”

“I really like analytics, and I really like what Craig does,” says Brad Gilbert, who coached Andre Agassi and Andy Roddick. “I believe he’s helped Novak so much with knowledge on his fighters’ strengths and weaknesses.”

However Gilbert, who describes himself as “just a little bit old skool,” sees limits to statistical research. Regardless of the numbers say about what works general, you continue to have to grasp your participant, and there’s nonetheless price in being constant. 

“Maximum issues may well be quick, however what for those who’re [David] Ferrer or [Simona] Halep, anyone who wins with their legs?” Gilbert says. “I do know Andre felt maximum relaxed when he wasn’t making mistakes.”

In operating with O’Shannessy, Alison Riske and Matteo Berrettini have achieved tactical adjustments in accordance with their fighters’ inclinations. Every participant completed 2019 at career-high scores: Riske, who reached the Wimbledon quarterfinals, at No. 18; Berrettini, who certified for the ATP’s season-ending championships, at No. 8. (AP Pictures)

Gilbert additionally believes that high avid gamers can move to puts the place stats can’t apply. He issues to Pete Sampras’ win over Agassi within the 1999 Wimbledon ultimate for instance. Entering the fit, Sampras hadn’t long gone for broke a lot on his 2d serve. 

“We idea Andre may assault it,” Gilbert says concerning the serve. “However Pete principally mentioned, ‘That’s no longer taking place to me.’ He increased his velocity, and served lighting fixtures out.

“The patterns inform you numerous, particularly with guys within the 80 to 100 score vary. However the most efficient guys can damage the patterns. I’m nonetheless a believer within the greatness of the human part.”

For Gilbert, O’Shannessy’s luck is also about extra than simply his math talents. It can be as a result of he provides one thing that just right tennis coaches have at all times presented: character.

“He’s can instill self belief, and that’s so much in my guide,” Gilbert says. “I imply, I really like paying attention to him, too.”

When O’Shannessy talks about his youth afternoons spent serving and volleying on grass courts in Albury, he makes it sound like a misplaced tennis utopia. Has he recovered a few of that international in his statistical paintings? In the ones days of Aussie dominance, the issues had been quick, attacking used to be the secret, and one of the simplest ways to win used to be additionally the fastest. Perhaps, if we imagine O’Shannessy’s knowledge, the game truly hasn’t modified all that a lot. The place it used to be as soon as about serve and volley, now it’s concerning the serve and the forehand. 

“Arguing concerning the sport is a laugh, and getting pushback is a laugh,” O’Shannessy says with fun. “Particularly whilst you’re the man with the numbers to again it up.”


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