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<blockquote data-quote="TownieMatt" data-source="post: 1356048" data-attributes="member: 7941"><p>RE: Alstork and defense</p><p></p><p>Advanced analytics still have a really hard time quantifying the effect that players have on the defensive end. Defensive win shares is one of the better defensive stats available for CBB, but even that only takes into account minutes played, defensive rebounds, steals, and blocks. So much of what a good defender does isn't included in that calculation. </p><p></p><p>Take Alstork's great defensive performance against Cowan. How many times did that include a steal, block, or rebound? Hardly ever. Instead, his defense forced Cowan to give up the ball or take bad shots, which doesn't end up in the box-score. </p><p></p><p>IMO the best defensive stat is Plus-Minus, which is the scoring differential while a player is in the game (Real Plus-Minus is actually <a href="https://deadspin.com/just-what-the-hell-is-real-plus-minus-espns-new-nba-s-1560361469" target="_blank">even better</a>). This obviously takes offense into account as well, but points allowed while you're on the court is ultimately what wins or loses games. </p><p></p><p>The problem with Plus-Minus is that is requires pretty advanced score-keeping, since you need to keep track who was on the floor for every point scored. To my knowledge, that data isn't publicly available. Programs pay statistical services for analysis like that (Stats, Inc. for example), so I'm almost positive our staff has access to those stats.</p></blockquote><p></p>
[QUOTE="TownieMatt, post: 1356048, member: 7941"] RE: Alstork and defense Advanced analytics still have a really hard time quantifying the effect that players have on the defensive end. Defensive win shares is one of the better defensive stats available for CBB, but even that only takes into account minutes played, defensive rebounds, steals, and blocks. So much of what a good defender does isn't included in that calculation. Take Alstork's great defensive performance against Cowan. How many times did that include a steal, block, or rebound? Hardly ever. Instead, his defense forced Cowan to give up the ball or take bad shots, which doesn't end up in the box-score. IMO the best defensive stat is Plus-Minus, which is the scoring differential while a player is in the game (Real Plus-Minus is actually [URL="https://deadspin.com/just-what-the-hell-is-real-plus-minus-espns-new-nba-s-1560361469"]even better[/URL]). This obviously takes offense into account as well, but points allowed while you're on the court is ultimately what wins or loses games. The problem with Plus-Minus is that is requires pretty advanced score-keeping, since you need to keep track who was on the floor for every point scored. To my knowledge, that data isn't publicly available. Programs pay statistical services for analysis like that (Stats, Inc. for example), so I'm almost positive our staff has access to those stats. [/QUOTE]
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