Murphy was promoted to Triple-A Worcester on Monday, Christopher Smith of MassLive.com reports.
Murphy joins the WooSox rotation after dominating at Double-A Portland, posting a 2.58 ERA, 1.00 WHIP and a .170 BAA over 15 outings (13 starts) for the Sea Dogs. The left-hander's struck out 91 and walked 31 over 76.2 innings. Murphy throws a fastball up in the zone, along with a changeup, curveball and slider.