Thompson

MEMORANDUM

Frederick Thompson appeals (1) the district court’s denial of his motion for leave to conduct additional discovery and his request to add witnesses, and (2) the district court’s grant of summary judgment in favor of the defendant. We have jurisdiction under 28 U.S.C. § 1291 and affirm.

Because the parties are familiar with the facts, we recite here only those facts necessary to explain our decision.

I. Thompson’s Motion for Additional Discovery and to Add Witnesses

The district court has broad discretion in supervising the pre-trial phase of litigation, and its decisions regarding the *715 preclusive effect of a pre-trial order will not be disturbed absent a clear abuse of discretion. Johnson v. Mammoth Recreations, Inc., 975 F.2d 604, 607 (9th Cir. 1992) (citations and quotations omitted).

Under Rule 16(b), Fed.R.Civ.P., Thompson was required to “show[ ] good cause” why he should be given leave to add additional witnesses and take additional depositions after the deadline, imposed by the district court’s scheduling order. Thompson’s belated request in October 1999 to depose two members of the defendant’s interview committee was made more than four months after…