It's kind of a hokey idea to have in the middle of the tennis season, a World Tennis Day/Night, but the Garden was pretty much packed for it. Now many of those seats were distributed to business contacts of BNP Paribas, the bank that sponsors the event in New York, London and Hong Kong. For me, though, it's a thrill to get up so close--because for much of the three matches, I was sitting front row behind the