The Red Sox are optioning right-hander Brayan Bello to Triple-A Worcester, reports Dan Roche of WBZ. Boston will add recently acquired lefty reliever Joe La Sorsa to the active roster for tomorrow’s series opener in The Bronx.

Bello was knocked around again this afternoon, giving up eight runs over five innings to take the loss against the Orioles. He’s now sitting on a 6.34 earned run average over 61 frames on the season. He’s striking hitters out at a career-low 15.6% rate. Bello has a career-worst average exit velocity allowed while giving up a lofty 1.48 home runs per nine innings.

More to come.