WIMBLEDON, England—Roger Federer is still not sure whether he will compete at the Tokyo Olympics, saying Saturday that he and his team plan to “reassess the situation after Wimbledon.” Speaking to reporters in a video conference from the All England Club before the grass-court Grand Slam tournament begins Monday, Federer said that how things go over the coming fortnight will affect his plans for the next couple of months. “Obviously, if I play really good here or really bad, I think it has an impact on how everything might look for the summer,” he said. “Still, my feeling is I would like to go to the Olympics. I would like to play as many tournaments as possible. But I think we decided now let’s just get through Wimbledon, sit down as a team, and then decide where we go from there.” Wimbledon ends July 11. The Tokyo Games—which were postponed …