Tennis great Rod Laver is surprised to hear that Rafael Nadal's attempt to win four straight Grand Slam tournaments is over. The injured Nadal lost in the Australian Open quarterfinals, 6-4, 6-2, 6-3 Wednesday to fellow Spaniard David Ferrer. Nadal was trying to win the "Rafa Slam" -- four straight Grand Slam tournaments, but over two seasons. More...