What Tommy Haas has done this week is flat out unbelievable. Nobody could have seen this coming. I think Haas is a little surprised himself. He has beat Alexandr Dolgopolov, Novak Djokovic, and Gilles Simon in straight sets. Djokovic came the closest to taking a set off the German, getting to 4-4 in the second set, but even the world No. 1 wasn't enough to slow down the former world No. 2. Haas is almost 35-years old now, and not many have had success at this point in their career. Andre Agassi and Jimmy Connors each had a considerable amount of success in their mid and late 30's, but that was a different era of tennis. This is supposed to be the era, where athleticism and physical fitness dominate the sport, yet somehow at age 34, Haas is beating guys much younger than him. The last three opponents that Haas beat were a combined 25 years younger than Haas. What Haas has done in the last week has been the most amazing accomplishment of the 2013 season so far.