Is a motion for leave to amend to add race discrimination and breach of contract under state law an abuse of discretion?

Prior to the pretrial conference, Reed sought leave to amend his complaint to add claims for breach of contract and race discrimination under state law. Although the court permitted Reed to file his motion for leave to amend, it then denied the motion. Reed contends that his motion to amend his complaint should have been granted. A district court's denial of a motion for leave to amend is reviewed for abuse of discretion. United States v. County of San Diego, 53 F.3d 965, 969 n. 6 (9th Cir.1995).