Major League Baseball is seeking a speedy dismissal of third baseman Alex Rodriguez's lawsuit challenging a season-long suspension for using three prohibited performance enhancing substances.

MLB lawyer Howard Ganz said in a letter to U.S. District Judge Edgardo Ramos that Rodriguez's claims do not come "remotely close" to what is needed to overturn an arbitration decision in federal court. Ganz said in the letter, which became public Tuesday, that the lawsuit should be tossed because a court is not empowered to re-examine the merits of an arbitration award.

Arbitrator Fredric Horowitz cut Rodriguez's 211 game suspension to 162 games and the 2014 postseason. He concluded Rodriguez used banned substances each year from 2010-12 and twice tried to obstruct MLB's investigation.