## Optimal Choices – Serve pt.2

Had a thought while glancing over what I posted the other day. It makes sense to look at both the start and end zones for the serve, but also who you're serving. You can serve into zone 5 but if the middle back passer takes it, that's a different efficiency (and a different angle) than [...]

## Optimal Choices – Serve

Something I find fascinating is the idea of making the right choice. As coaches, we often have conversations with players about their decision making process - whether it's asking why she set the quick in that situation, why she dove into the angle on her block move, why she served the libero, why she tried to tip [...]

## FBSO eff by Player / Serve EndZone

So I was watching the UCLA / BYU match tonight and was frustrated by the number of errors made from the service line by non-jumpservers. If Micha, JT, or Ben Patch want to go back and rip it, I get it, they're going to miss at a higher rate. But if you're a Joe Grosh [...]

## Why getting aced hurts more than you think

We've used Efficiency Change in the majority of posts to identify where value is added or lost relative to expectations, but here I thought I would try to shave down the complexity of that metric. The above viz looks at FBSO efficiency (won-lost on 1st ball)/(all receive attempts) in the left column - the percentage of [...]

## Service Error and Eff Change

*Check out the Eff Change posts if you haven't. Output, Input, Eff Change Returning to the very first question - How aggressively do we want to serve? Here is what team service error% looks like graphed against the average Eff Change per serve in each match. Again we see an inverse relationship between the two [...]

## Service Error and FBSO

As a follow-up, here is a more advanced way to evaluate serving. FBSO is of course indicative of your opponent's ability to win the point on the opening possession - but what many overlook is losing on the opening possession. What you see graphed along the y-axis is "FBSO efficiency", meaning we subtract lost points on the 1st [...]

## Service Error and Passer Ratings

How aggressively do we want to serve? Tough, but not too aggressive? Keep it in and make your opponent work? Screw it and let it rip? Probably somewhere in the middle...? Serve tough until enough parents in the audience complain?? (Side note, listen to Becks talk serving if you never have) The first step coaches usually take [...]