Sean Murphy and Spencer Strider were back to work on Sunday in their efforts to return to the Atlanta Braves .  The All-Star catcher had the big day he had been searching for since getting to live action. He had himself a two-hit day, including an RBI double. Before Sunday, he had been hitless in his rehab assignment, including his appearances with High-A Rome.  His RBI, which drove in Ben Gamel, was the lone run plated by Triple-A Gwinnett on the day.  Murphy has been working his way back from a hip injury since September. Much of a hitter’s swing comes from the hips, so it’s not too surprising that it took him some time to get loose and start getting good strokes on the ball.  He said back on Tuesday that he felt he had been starting to make better swings, but it took time for it to translate on the stat sheet. In the meantime, Drake Baldwin has been splitting catching duties with Jonah Heim.…