Lamar Odom is getting professional help -- TMZ Sports is told the NBA champion checked into rehab after his recent DUI arrest. Odom entered a 30-day treatment program at the iRely Recovery facility in Los Angeles ... after his run-in with police sparked some triggers from his past that he wanted to address. The former Lakers star is looking to shake marijuana  ... as he was afraid his smoking could lead to doing hard drugs again, his manager, Gina Rodriguez , told us. Hailey Bieber 's sister