to play starter's minutes. PER has been said to reward inefficient shooting. To quote Dave Berri, the author of The Wages of Wins: Hollinger argues that each two point field goal made is worth about 1.65 points. A three point field goal made is worth 2.65 points. A missed field goal, though, costs a team 0.72 points. Given these values, with a bit of math we can show that a player will break even on his two point field goal attempts if he hits on 30.4% of these shots. On three pointers the break-even point is 21.4%. If a player exceeds these thresholds, and virtually every NBA player does so with respect to two-point shots, the more he shoots the higher his value in PERs. So a player can be an inefficient scorer and simply inflate his value by taking a large number of shots. Hollinger responded via a post on ESPN's TrueHoop blog: Berri leads off with a huge misunderstanding of PER—that the credits and debits it gives for making and missing shots equate to a “break-even” shooting mark of 30.4% on 2-point shots. He made this assumption because he forgot that PER is calibrated against the rest of the league at the end of the formula. Actually, if we took a player that was completely average in every other respect for the 2006–07 season—rebounds, free throws, assists, turnovers, etc.—and gave him a league-average rate of shots, and all of them were 2-pointers, and he shot 30.4%, he'd end up with a PER of 7.18. As long-time PER fans know, that would make him considerably worse than nearly every player in the league. To end up with a league-average PER of 15.00, the actual break-even mark in this case is 48.5%, which is exactly what the league average is on 2-point shots this season. Reference guide Hollinger has set up PER so that the league average, every season, is 15.00, which produces sort of a handy reference guide: Only 30 times has a player posted a season efficiency rating over 30.0 (with more than 15 games played in that season), with the highest score being 32.85 (Nikola Jokić). Michael Jordan and LeBron James lead with four 30+ seasons, with Shaquille O'Neal, Wilt Chamberlain and Giannis Antetokounmpo having accomplished three each, Anthony Davis, Nikola Jokić and Joel Embiid having accomplished two each, and David Robinson, Tracy McGrady, Dwyane Wade, Chris