Day 4: Nadal cruises; del Potro, Jankovic eliminated
MELBOURNE, Australia (AP)—If Rafael Nadal is getting nervous as he eases closer to winning his fourth consecutive Grand Slam, he sure isn’t showing it. After his 6-2, 6-1, 6-1 win Thursday over American qualifier Ryan Sweeting, the Spanish star appeared as comfortable talking about his next match—against 18-year-old Australian Bernard