My colleague Jeff Sagarin and I have been doing Adjusted + -  since 2000. Therefore I was interested to see the “Real Plus-Minus appear last week. I don’t know  how the numbers are crunched but many don’t make any sense. Let’s take Hollins and Redick of the Clippers. On April 15 RPM has Hollins above average and  Redick below average. we have Redick way above average and Hollins way above average. Take a look below at how the Clippers have played (points per 48 better or worse than average ,adjusted for strength of opponent with) Redick and Hollins on and off the court with combination of other Clippers. Minutes are also listed. You can see Redick usually makes things better and Hollins usually makes things worse. Would love to see Dean Oliver post an explanation for why  the “real” numbers have Hollins better. I am waiting.