Baseball super agent Scott Boras has hit Mets slugger Gary Sheffield with a $600,000 lawsuit.

Boras, who represents baseball superstars such as Yankees Mark Teixeira and Alex Rodriguez, filed the suit under seal in Manhattan federal court last week.

The two have been feuding since Sheffield dumped Boras just before he signed a $39 million contract with the Yankees, from whom he played from 2004 to 2006. But Boras has claimed Sheffield still owes him money.

Sheffield would not comment on the suit. Boras did not return calls.