While our server was down for the bulk of the business day (if you're located in the Pacific time zone), in addition to Jason Bay's press conference introducing him officially as a Met, Matt Holliday agreeing to a 7 year $120 million contract (with an option for an 8th year) with the St. Louis Cardinals, and news of Randy Johnson's retirement from baseball, the Mets signed 6 players to minor league contracts and extended each of them invitations to spring training.They are infielders Mike Hessman (which had been previously reported), Mike Cervenak, Russ Adams and Andy Green, pitcher R.A. Dickey (which had been previously reported) and outfielder Jesus Feliciano.   Since you may not get a long look at any of them, here are some pictures:Mike HessmanMike CervenakRuss AdamsAndy GreenR.A. DickeyWhoops!Jesus Feliciano