Vacatur on the ground of manifest disregard requires a finding that the arbitrators refused to apply or altogether ignored a governing legal principle of which they knew, and that the law so ignored was well-defined, explicit, and clearly applicable to the case.
Matter of Credit Suisse Sec. (USA) LLC v. Finn, NY Slip Op 02371 (1st Dep't April 23, 2020)
Here is the decision.
