How far is too far in the pursuit of victory? Great athletes push on the norms, rules, and boundaries of their games. This is part of what allows them to achieve excellence, but it also sometimes leads to crossing the line. Jack Bowen, blogger at the Santa Clara University Institute for Sports Law and Ethics blog, and Shawn Klein discuss several cases at the boundaries of the rules of sport: icing-the-kicker, non-traditional formations in the NFL, and “Deflation-gate.”