Roger Federer has done a million post-match interviews. Usually, especially in his prime, these interviews were like mini-coronations, celebrations of Federer's greatness. But lately, as Federer has begun to slip and the competition has started to catch up and in the case of Nadal and Djokovic, surpass Roger, Federer's post-match interviews have become glimpses into Roger's competitive psyche. Here's his last post-match banter after shockingly losing to Tommy Haas in the finals of Halle, a Wimbledon grass warmup event.“I should never have lost the first set. So, obviously that hurt,” said Federer. “He got momentum after that. He started to serve a bit better. I missed a few more forehands and missed a few chances earlier on in the second. So, it was a tough match for me to lose really... He was aggressive, he was maybe the more inspired player out there today. And that’s why he deserved to win.”Now, Roger didn't completely and come out and say that he lost the match rather than Haas winning it. Haas hadn't beaten Federer in ten years and eight matches in the interim. But he does start the interview out saying he never should've lost the first set and that's what gave ole Tommy the impetus to make his upset bid. And then Roger says bluntly, "So, it was a tough match for me to lose really." Probably realizing he was being that bad sport, he followed that with lines about how Haas was the more "inspired player" and "deserved to win," but I think most people can see through the smokescreen and see that Federer puts the blame on himself for losing rather than say Haas was the better player.Why does Federer do this? Do all great players when they see the carpet slipping or being pulled out from underneath their feet do this? I think Federer does it because his mind does not like to engage the idea that a player can just be better than him, especially one who he doesn't really respect all that much. To a certain extent all great players do this, but Federer seemingly doesn't get the memo from his handlers that this type of talk is embarrassing and repeatedly does it.Now, I'm not saying Federer is wrong or that he really didn't lose the match rather than Haas win it. But it's an interesting insight into Federer's stubbornness and a psyche that refuses to consider that he still isn't the best player in the game and invincible.