Derrick Robinson, the newest Cincinnati Red, never had a locker quite like this in the minor leagues. He was asked how it compared. “It doesn’t compare,” he said with a laugh. Robinson, a 25-year-old outfielder from Gainesville, Fla., was called up to the big leagues for the first time Wednesday to take the place of injured left fielder Ryan Ludwick. Robinson’s large, comfy locker didn’t have his nameplate on it before the game, but his jersey hung off the side of the locker. Maybe that made the moment feel real for him, though he had to be dazed by his new surroundings. Less than 24 hours before, Robinson was taking batting practice with the Triple-A Louisville Bats when manager Jim Riggleman called him over. Robinson thought he wanted to go over signs for the new season. Instead he got the news every minor leaguer desires. “Words couldn’t explain,” said Robinson, who was a fourth-round pick by the Royals in 2006. “I was overwhelmed. The hard work paid off. It’s a dream come true. It’s a great group of guys to have this experience with. I’m a happy man right now.” Robinson hit .300 in 22 games in spring training and was one of the last players demoted to the minors. A year ago, he hit .268 with the Triple-A Omaha Royals. He was a free agent last December when the Reds signed him to a minor-league contract and invited him to major-league spring training camp. “Robinson had a really good spring,” manager Dusty Baker said. “He can help us in a lot of ways. He can pinch run, pinch hit, switch hit. He’s an outstanding outfielder. He can give (Shin-Soo) Choo a breather in center sometimes. He’s a true center fielder and a very good player, and we need some speed.”