By Tzvi Machlin The NBA playoffs kicked off in a big way yesterday with half of the field playing their first games. But today’s games are going to feature some of the heavier hitters – including last year’s NBA Finals participants. Four games are slated for Sunday’s lineup of NBA playoff games. Starting things off at 1:00 p.m. EST will be the East’s top seeded Miami Heat hosting the Atlanta Hawks. At 3:30 p.m. EST the Boston-New York rivalry gets renewed again with the Brooklyn Nets taking on the Boston Celtics at TD Garden. Then 6:30 p.m. the reigning NBA champion Milwaukee Bucks battle the …