The US Open gets underway today at Flushing Meadows. WNYC's Dan Blumberg lists a few things to look forward to during this year's tournament. Andre Agassi will play under the lights tonight in what he says will be his last US Open. The 36-year-old made it to the finals last year, playing an epic match against American James Blake along the way, but Agassi faces a tough draw this year. This year's open will also be the last chance for fans to see Martina Navratilova play doubles. Just short of her 50th birthday, and having won more than 300 career singles and doubles titles, she's calling it quits for the second and she says the last time. Other players to watch include the number one and two seeds Roger Federer and Rafael Nadal. On the women's side, Martina Hingis will be playing at the Open for the first time in four years, as she continues her comeback. And last year it was the introduction of the blue court... this year it's instant replay. Each player will now be allowed to challenge two calls per set.