Kelly was reinstated from the paternity list Monday, Chris Cotillo of The Springfield Republican reports.
Kelly will return to Boston's bullpen ahead of Monday's series opener versus the Rays following a three-day absence while with his growing family. The right-hander has appeared in three games since getting called up Aug. 28, surrendering two runs on three hits and two walks while striking out four over three innings. Josh Winckowski was optioned to Triple-A Worcester in a corresponding move.