There is a new book, "Violence and Aggression in Sporting Contests: Economics, History, and Policy" edited by Todd Jewell, that may be of interest to some Sports Law Blog readers. The table of contents can be found here. While several chapters are largely doctrinal, most include math-heavy econometric analysis to complement the more descriptive sections.
The introductory chapter by Todd Jewell, Afsheen Moti, and Dennis Coates provides a fascinating history lesson about the overlap between violence/aggression and spectator sports.
Dave Berri and I wrote a chapter that includes a meta-analysis of NBA referees as regulators and a statistical look at the efficacy of the so-called "Hack-a-Shaq" strategy.
The book is part of the "Sports Economics, Management, and Policy" series edited by Dennis Coates. Additional books in the series can be found here.