Hermida, 27, has hit .111 (2-for-18) with one home run, three RBI and two runs scored in 10 games for Cincinnati this season. In 105 games from Triple-A Louisville he has hit .319 (126-for-395) with 28 doubles, one triple, 17 home runs, 55 RBI, 67 runs scored and 46 walks. The outfielder was named an International League midseason All-Star this year. Over parts of seven Major League seasons with the Florida Marlins (2005-09), Boston Red Sox (2010), Oakland Athletics (2010) and Reds (2011), he has hit .258 (502-for-1948) with 101 doubles, seven triples, 64 home runs, 242 RBI and 243 runs scored in 599 games played.
Hermida should join the team on Friday in San Diego. To make room for Hermida the Padres designated Kyle Phillips for assignment.