Reports of retained experts and their deposition testimony constitute party admissions under Rule 801(d)(2)(B), (C), and/or (D). See Kreppel v. Guttman Breast Diagnostic Inst., Inc., No. 95 Civ. 10830(SWK)(MHD), 1999 WL 1243891 (S.D.N.Y. Dec. 21, 1999) (Rule 801(d)(2)(B)); Dean, by…