Alex Simons
337 posts

Alex Simons
@VballAlexSi
Sudden Impact Volleyball U15 Head Coach, Microsoft CVP Product Management, Ecological Dynamics Geek
Seattle, WA เข้าร่วม Temmuz 2022
337 กำลังติดตาม285 ผู้ติดตาม

Texas A&M converts 37.48% of serve-receive rallies on the very first swing.
Highest in all of Power 4.
56.4% of their side-out points come from that first ball.
They don't grind. They score immediately. @AggieVolleyball
New post on FBSO% and what it reveals about how teams actually win on serve receive:
open.substack.com/pub/alexsimons…
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New post: Serve Error% ranks 31st out of 36 metrics in predicting winning across all of NCAA DI volleyball.
349 teams. 5,100+ matches. r = -0.12.
The data is pretty clear.l!
open.substack.com/pub/alexsimons…
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I spent the last few weeks building a R based data pipeline to analyze every 2025 in-conference volleyball match across the ACC, Big 10, Big 12, and SEC.
630 matches. 66 teams. 30+ metrics.
Here's what actually predicts winning sets — and what doesn't:
✅ Dig-Set-Kill% (r=0.83) — way more predictive than raw Dig%
✅ Trans In-System Conv% (r=0.73) — underrated and trainable
❌ Serving Error% (r=-0.16) — stop obsessing over it
❌ Perfect Pass% (r=0.47) — Good Pass% matters more
Full post with all charts and the complete correlation table: alexsimons947623.substack.com/p/what-really-…
Thanks to @JoeTrinsey for the inspiration for this work!
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What Really Wins Sets? A Deep Dive into Power 4 Volleyball Statistics. Some pretty interesting/surprising results! For instance, having a higher service error % is positively correlated with winning. Pretty fascinating!
open.substack.com/pub/alexsimons…

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@Charlottean28 How in the world was that an offensive foul? Holy cow!
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@SydneyLWatson Several studies have shown that children born in the November (in northern hemisphere) have the highest lifetime muscle mass and more quick twitch fiber because their mother's had more sun exposure between months 4-6 of gestation and thus higher vitamin D levels.
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Texan boyfriend just explained that we aren't allowed to have an August-born child, because that child will be the youngest in their class and therefore, when they play sports, will be smaller than all the other kids and therefore will have a harder time.
Is this seriously the shit you guys think about? He's not joking either. I genuinely don't know what to do with this.
Planning kids around them playing football is so America-coded though lmao. 😂
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@muscleforlife You forgot the most effective of all - ‘Cocktail Drops’
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