Ex-NBA referee Tim Donaghy recently accused the NBA of coercing referees to help the Brooklyn Nets defeat the less glamorous Toronto Raptors in their first round playoff series. This echoes previous claims by Donaghy about the NBA manipulating games. The most notorious example is Game 6 of the 2002 Western Conference finals, when the two-time defending champion Los Angeles Lakers staved off elimination by defeating the Sacramento Kings. Donaghy alleged that two referees (understood to be Dick Bavetta and Bob Delaney) fixed the game. Donaghy was convicted of betting on games so he may not seem a reliable accuser, but...