San Diego Padres right-hander Casey Kelly may be headed for elbow ligament-replacement surgery. Padres general manager Josh Byrnes said the prospect went back to San Diego on Tuesday for tests on his sore right elbow. Kelly was acquired from the Red Sox in the deal that sent first baseman Adrian Gonzalez to Boston in December 2010. All rights reserved. "I assume they'll want a second opinion to make sure all of their bases are covered. That's the right thing to do.