It has been a turbulent week for Texas Tech quarterback Brandon Sorsby, and it took another interesting turn over the weekend. The embattled signal caller has retained Jeffrey Kessler, an antitrust and sports law attorney known for his work on cases against the NCAA and NFL, for his upcoming legal fight to keep his college eligibility, ESPN reported Saturday. Kessler has represented the NFLPA in litigation against the NFL, including Tom Brady during the “Deflategate,” Ray Rice, and players involved in “Bountygate.” He also successfully argued against the NCAA’s rules regarding student-athletes receiving non-cash education-related compensation. Brendan Sorsby #2 of the Texas Tech Red Raiders Ron Jenkins/Getty Images for ONIT Sorsby’s week began with a statement from Texas Tech that he would seek treatment for a gambling addiction at the same time ESPN broke the news that he was being investigated for violating the NCAA’s gambling policy.…