Four more men advanced to the quarterfinals of the Harvard Summer Tennis Tournament this past week when Robert Hunker, of the Naval Supply Corps School, Thomas Mann and F. M. Shore, Jr., of the Naval Training School (communications), and Jack Lynch, of the V-12 Unit, won their second round matches.

Hunker labeled himself as a man to watch when he defeated Jack Benn, resident of Cambridge and former number one man on the Brown varsity. The scores were 3-6, 7-5, and 6-1. Shore trimmed Ed Twarog, AST, 6-3, 6-4; Lynch overwhelmed G. C. Fuller, 6-0, 6-0; and Mann took over Robert E. Stokes 6-2, 6-2 to round out the septet.