Earlier today I asked, "Does Sammy Mejia have the edge over Ronald Dupree?" We have the answer: no. From Keith Langlois at Pistons.com:
The Pistons got down to the 15-man roster limit at Monday’s deadline by waiving rookie Sammy Mejia, something of a surprise since they signed him to a partially guaranteed contract after his performance in the Las Vegas Summer League.
Mejia, a 2007 second-round draft choice out of DePaul, lost out in his battle for the final roster spot with veteran Ronald Dupree.
The waiving of Mejia means the Pistons will carry three rookies on the roster – first-round picks Rodney Stuckey and Arron Afflalo and Senegalese center Cheikh Samb, a 2006 second-round choice who spent last season playing professionally in Spain.
It's likely too late for Mejia to earn a contract overseas, but he should find a spot waiting for him in the D-League. It wouldn't be as lucrative, but the D-League would keep him closer to realizing his dream of playing in the NBA.