Smith will undergo season-ending shoulder surgery Wednesday, Rob Bradford of WEEI.com reports.
Smith has been sidelined since May 15 with a shoulder injury, and he recently received a third opinion that determined the issue would require surgery to heal. It's another tough break for the 28-year-old, who has pitched just 23.2 innings over the past three seasons due to injuries. He'll look to get back to full health before the start of spring training next year.