Jason Green weighs in with his San Antonio Spurs vs. Portland Trailblazers Tuesday NBA basketball Preview and a free nba prediction to boot. NBA odds favor the Blazers by 4.5. The over/under is set at 188.5. The Blazers are 3-7 ATS in their last 10 games playing on 0 days rest, the Tim Duncan vs. LaMarcus Aldridge match up is key tonight. Nicolas Batum is really coming into his own in 2012, watch for him.