Add three more faces to the list of roster hopefuls that will try to impress the Dallas Mavericks’ brass when the team convenes for training camp on Oct. 1.

Tuesday with their roster seemingly already set at 15 the Mavericks announced the signings of center Fab Melo swingman D.J. Kennedy and guard Richard McConnell expanding the roster to 18 as the team sits just three weeks from the start of training camp. The trio will now try to make a strong impression while hoping to earn a spot on the regular-season roster.

The 7-foot Melo headlined the day of signings after the 22nd overall selection by the Boston Celtics in the 2012 NBA Draft was traded to Memphis on Aug. 15 before being waived by the Grizzlies 15 days later. He played just six games for the Celtics last season and spent most of the year with the Development League’s Maine Red Claws where he was named to the D-League All-Rookie First Team and All-Defensive First Team.

Like Melo the 6-foot-6 215-pound Kennedy also joins the team after a stellar season in the D-League named to the All-Star team during the ’12-13 campaign before helping the Rio Grande Valley Vipers win the title. The St. John’s product also comes with limited NBA experience playing in only two career games with the Cleveland Cavaliers.

Lastly McConnell will try to make a name for himself after a great collegiate career at St. Mary’s from ’07-11 before playing professionally in Italy. He ranks among the top 10 in school history in 3-point field goals made (3rd) and attempted (6th) 3-point percentage (2nd) free-throw percentage (5th) assists (2nd) assists average (7th) steals (tied for 6th) and games played (4th) garnering WCC Player of the Year and honorable mention All-American honors by the Associated Press as a senior.