Castro and Rosales split Saturday's game at shortstop against the Pirates. Keppinger was a mid-game substitution at first base, another position he's learning.Look out for the 24-year-old Rosales, who was the Reds' 12th-round Draft pick in 2005 and split last season at Class A Sarasota and Double-A Chattanooga. He's already caught Baker's eye by going 5-for-8 with a home run through four exhibition games, including two hits on Saturday. "He doesn't look athletic. He just is athletic," Baker said. "He gets the job done big time. The more you're around him, the more you like him, the more he grows on you. He's in the right place at the right time. He felt bad [Friday] for throwing that ball away [for an error]. It's going to happen here. He's played well for us." One player who is not a candidate to replace Gonzalez is second baseman Brandon Phillips, who was once a shortstop prospect. Baker immediately snuffed out any speculation regarding Phillips. "No -- then you'd weaken yourself at two positions," Baker said. "You leave Brandon alone. If you do that too, it's more work on him defensively and that could affect his offense at the same time. He's a potential Gold Glove second baseman." That could put Keppinger on the inside track for shortstop, barring an acquisition. Keppinger may have had a breakthrough last season, but the Reds are under new management with Baker, who had never seen him play before camp opened. Therefore, Keppinger will have to keep proving himself. "There are arguments to both sides," Keppinger said. "People could say, 'Hey, he was only out there a half a year and only had this many games or this many at-bats. You always have to do it, regardless of what you did the year before. This is a game of, 'What have you done for me lately?' It's not so much what you did last year."
Mark Sheldon is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.