The Baltimore Orioles traded Class-A infielder Pete Maestrales to the Kansas City Royals for utility man Eli Marrero on Wednesday. Marrero is batting .159 with 4 RBI?s in 32 games so far this season, but with an injury-plagued Oriole lineup, he may need to contribute immediately. "I'm pretty excited we acquired him," Manager Lee Mazzilli said. "He's definitely going to be a boost to this team."