NEW YORK - A New York federal judge on April 25 certified a class of tennis umpires who claim that they were improperly misclassified as independent contractors while working the U.S. Open and are owed additional wages (Steven Meyer, et al. v. United States Tennis Association, No. 11-6268, S.D. N.Y.; 2013 U.S. Dist. LEXIS 60091).