The Angels have asked the commissioner's office to investigate the circumstances behind an umpire's alleged claim that the team has a "well-documented" problem with A.J. Pierzynski, Angel General Manager Bill Stoneman said Sunday. In the absence of proof, Stoneman said, "We don't need people making things up." After the Chicago White Sox catcher was hit on the leg by the Angels' Kelvim Escobar on Saturday, plate umpire Paul Nauert issued a warning to both teams. When the Angels protested, Scioscia said Nauert told him the umpires had "well-documented" information about "the problems with Pierzynski and your team."