On July 20, Seattle Seahawks offensive left tackle Russell Okung sent shock waves throughout the sports agent profession.His first-person story revealing his decision to go sans representation and handle his next contract negotiation by himself was posted on The Players’ Tribune website, a new media platform for professional athletes founded by retired Major League Baseball star Derek Jeter.In his article, Okung stated that he decided to “free [his] agent” because he did not want to pay his agent’s …