MLB may seek up to a 100-game ban for players like Alex Rodriguez and Ryan Braun, according to ESPN.
Cesar Puello, a Mets prospect currently playing for Double-A Binghamton, is named in the report. He is the only non-Major League player named.
Puello, 22, is hitting .302, with a .380 OBP, nine doubles, two triples, eight home runs and 33 RBI in 46 games this season.
Ex-Met Fernando Martinez, who was DFA'd by the Houston Astros last month, is also named.