Padres second base candidate Jedd Gyorko hit a grand slam in his first at-bat of the spring and flawlessly handled four grounders in the field Friday. But he didn’t call it a day after the starters came out of the first exhibition game of spring training. Gyorko retired to a back field with shortstop Everth Cabrera and Double-AA manager Rich Dauer and spent another half-hour fielding grounders and taking relays at the second-base bag. “The day’s not over when the game ends during spring training,” Gyorko said after reaching the Padres clubhouse. “I’ve always been known as a hitter first. I also want to be known for my defense and all-around play. Cabby and I went out there to work on double play transfers.”