NBA Playoff telecasts led all sports broadcasts this past weekend in overnight Nielsen ratings, with TNT's Heat-Bulls NBA Eastern Conference Finals Game One last night taking the top spot among all sports programs. Fox also scored well with its NASCAR Sprint Cup Series telecast from Dover Int'l Speedway, earning a 3.8 overnight yesterday afternoon, up from a 3.6 overnight last year. NBC yesterday earned a 3.4 overnight for the final round of The Players PGA Tour event, which saw K.J. Choi defeat David Toms in a playoff. Last year's final round earned a 3.3 overnight for Tim Clark's victory. Ratings were unavailable at presstime for ABC's Thunder-Grizzlies Game Seven yesterday and for the third round of The Players on NBC (Austin Karp, THE DAILY).