@StatsOnTheT profile picture
Stephanie Kovalchik @StatsOnTheT

Data scientist @ZelusAnalytics. Proud tennis nerd. Contributor to 'You Cannot Be Serious Stats' Substack.

Joined September 2015
  • Tweets 1,438
  • Following 92
  • Followers 3,539
632 Photos and videos
Changing Places: 12-Month Adjustments at the Top of the Tennis Ratings, by @StatsOnTheT open.substack.com/pub/seriou…
1
1,391
We all know about the concept of lucky losers in tennis. But what about 'lucky winners'? And were there any at the @usopen ? Find out here with the latest analysis at You Cannot Be Serious Stats open.substack.com/pub/seriou…
3
1,376
Who are the top @WTA prospects for the @usopen title? Who could get the most help from the luck of the draw? Get the lowdown on these questions and more at You Cannot Be Serious Stats open.substack.com/pub/seriou…
1
1,231
Do Djokovic or Alcaraz have the edge for the last Major title of 2023? And who has the tougher draw? See what the ratings breakdown of the @usopen men's seeds say at You Cannot Be Serious Stats open.substack.com/pub/seriou…
990
Jessica Pegula is the player of the moment but Coco Gauff's current serve and return skill ratings are 🔥 See the @WTA skill leaderboards on You Cannot Be Serious Stats seriousstats.substack.com/p/…
946
Who is up and who is down when it comes to overall serve and return on @atptour ? Find out with the current serve and return leaderboards at You Cannot Be Serious Stats seriousstats.substack.com/p/…
1
657
Still buzzing from the latest additions to the list of @Wimbledon champions? See how the finals were won with this new analysis on You Cannot Be Serious Stats seriousstats.substack.com/p/…
1
648
If anyone was going to have a chance to defer a 24 slam title from Djokovic it's @carlosalcaraz Are there signs that Alcaraz could make this a better contest than what we saw in Paris? I think so based on the latest at You Cannot Be Serious Stats seriousstats.substack.com/p/…
1
685
Ratings momentum can indicate when a player is performing above their current rating. Which competitors have the most momentum on serve and return ahead of the @Wimbledon main draw? See who at You Cannot Be Serious Stats seriousstats.substack.com/p/…
1
2
1,088
Who are the top men's and women's prospects for the @Wimbledon title this year? Is anyone close to Novak and Iga? Find these answers and more with the current grass court leaderboard at You Cannot Be Serious Stats seriousstats.substack.com/p/…
2
610
Performance analysis without skill adjustment? You better check yourself before you wreck yourself, and here is why... seriousstats.substack.com/p/…
3
961
A cautionary stats tale in 3 threads.. leading up to the men’s final @rolandgarros I was interested in how the effectiveness of Ruud and Djokovic compare by serve location. 3 seasons of clay matches show a fairly similar picture, with Ruud looking fierce on 1st to Deuce (1/3)
2
1
1
2,323
What’s going on? It's the dramatic confounding of opponent defensive skill and what can go wrong if we don’t adjust for this. e.g. Djokovic’s sample has multiple matches vs Nadal so he looks worse than he should. Bottom line (for all tennis stats really) - context matters. (3/3)
2
682
Clearly those numbers look counterintuitive so I wondered how they have matched up against each other. From the MCP we have their 2022 SF meeting in Rome and here Ruud looks like a totally different server with limited effectiveness across the board. (2/3)
1
384
In the @rolandgarros women's final, expect Swiatek to have a 1st serve edge out wide to Ad court and Muchova to dominate the T. Neither have a clear weapon on 2nd serve. If 1st in % is low, rallies could be decisive for today's title
4
1,113
When it comes to the serve patterns of the top @WTA players at @rolandgarros , nearly everyone is doing her own thing. See the panoply of types on clay at You Cannot Be Serious Stats seriousstats.substack.com/p/…
1
2
624
Stephanie Kovalchik retweeted
Zelus Analytics@ZelusAnalytics
31 May 2023
We'll be closing our data science and product roles on June 5th. Highly encourage those interested in joining our fully remote team to get their applications in while they can :)
Zelus Analytics@ZelusAnalytics
18 Apr 2023
Join us! We're hiring for data science, product, operations, and engineering roles across various sports (🏒🏈⚾️⚽️🏀🏏🎾⛳️). Work remotely with our talented team at Zelus and help shape the future of sports analytics. Learn more on our careers page zelusanalytics.com
3
9
21
21,489
Which servers at @rolandgarros will have the smartest choice of serve direction? Who will be the most predictable? The answers may surprise you. See the full analysis of the clay serve patterns of the top men's seeds on You Cannot Be Serious Stats. seriousstats.substack.com/p/…
2
435
Can anyone stop Swiatek and Sabalenka at @rolandgarros ? Current clay court ratings for the WTA suggest it could be a big ask. See the full preview on You Cannot Be Serious Stats open.substack.com/pub/seriou…
1
788
With Nadal's likely absence from @rolandgarros could we have one of the fiercest title fights for the clay Major in years? The latest clay skill ratings breakdown from You Cannot Be Serious Stats suggests so seriousstats.substack.com/p/…
2
559
Load more