Privately, some Clippers officials have grown frustrated trying to prove innocence for a violation that they say they didn't commit, according to several sources with knowledge of their thinking. Despite their certainty that they did nothing wrong, team officials seem less certain about the outcome of the high-profile investigation or whether the league's richest owner will face punishment, the sources said.

This article originally appeared on Hoops Hype: Privately, some Clippers officials have grown …