t claim and a negligence claim. As to the tort claim, "it is not necessary for all joint tortfeasors to be named as defendants in a single lawsuit." Temple v. Synthes Corp.. Ltd., 498 U.S. 5, 7, 111 S.Ct. 315, 112 L.Ed.2d 263 (1990). As to the breach of contract claim 6 EFTA00307567 MEMORANDUM IN SUPPORT OF PLAINTIFFS' M