re: Jimmy butler to Minnesota

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i was going off MPG. He was one of their key cogs, and losing him certainly didnt help their record even being as young as they were.

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In the 44% of minutes he played, they had a net rating of -3.5. When he was off the court, they had a net rating of +0.8. So they were 4.3 points better when he was off the court per 100 possessions. In the 47 games he played, they were 16-31 (34%), they were 15-20 in the 35 games he didn't play (42.9%).

If anything, losing him helped their record.

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PER measures efficiency, not usage or volume.

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Usage is a major component of PER. I examined the players who had 500 minutes or more during the season, and over 50% (.71 correlation) of the variance in PER can be accounted for by the usage rate alone.

In other words, regressing usage on PER, and with a 29 usage rate, Wiggins had a predicted PER of 20.4, 3.9 points higher than his 16.5.

And I'm not the only one who has identified this relationship.
Fun With Stats: examining PER with usage rate and plus/minus

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but that it seems that in order to have a high PER, a player also needs to have a high usage rate.

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Now obviously with every relationship, the more extreme the predictor, the more extreme a regression to the mean, and thus, diminishing returns.

Diminishing Returns for Scoring - Usage vs. Efficiency

And I think the above article relates well to Wiggins since his efficiency is largely a function of his scoring, and nothing else.