Question: The author of "Personal Foul: A First-Person Account of the Scandal That Rocked the NBA" refereed in the NBA for how many seasons?
Sentence (from "Tim Donaghy"): Tim Donaghy ( ; born January 7, 1967) is a former professional basketball referee who worked in the National Basketball Association (NBA) for 13 seasons from 1994 to 2007.
Relevant evidence: Yes