KANSAS CITY -- Carlos Rosa, the Royals Minor League Pitcher of the Year, was among four players added to the 40-man roster on Monday.
Rosa and left-handed pitchers Danny Christensen and Neal Musser were additions as general manager Dayton Moore set the Royals roster.
Also added was catcher Jason LaRue, obtained from the Reds in a trade for a Minor
Leaguer to be named on Monday.
Dropped from the roster were second baseman Donnie Murphy and left-handed pitcher Juan Cedeno, both designated for assignment.
"We'd like to retain both of them," Moore said.
Rosa, a right-hander, had an 8-6 record and 2.53 ERA in 24 starts for Class A Burlington last season. He rebounded from missing all of 2005 because of Tommy John surgery.
Christensen was 6-6 with a 4.89 ERA in 28 starts for Class A High Desert. He had 153 strikeouts in 162 innings.
Musser, who started last season in the Diamondbacks organization, was 6-3 with two saves and a 4.86 ERA in 28 games (20 starts) for Double-A Wichita.
LaRue, getting a late start last season because of a knee surgery, hit .194 for the Reds.
Although Cedeno was considered the key acquisition from the Red Sox in a 2005 trade for infielder Tony Graffanino, he was just 2-9 with two saves and a 5.78 ERA last season for Wichita.
Murphy, once considered a candidate for the Royals' second-base job, hit just .163 for them in
his 2004-05 trials. Last season for Wichita, Murphy hit .249 with 14 homers and 45 RBIs in 94 games.
Meanwhile, after making the LaRue trade, Moore said he had no other deals ready to pop.
"It's moved slower than I'd like it right now," he said.
Dick Kaegel is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.