MLB officials are eager to find a legal tool that will let them chip away at guaranteed contracts, as well as take a hard-line stand on drug cheats. Any attempt to void Gary Matthews' contract or punish him will be met by a union grievance and most likely will end up before an arbitrator, but MLB wants to test contracts any way it can. The Angels and MLB don't think Matthews has a legitimate reason to stay silent. "There's no reason for him not to say something," the source said. "If he had a prescription (for HGH) and he took it before it was banned, then he doesn't have to worry about anyone punishing him."