Don’t blame Roger Federer for being nervous on Tuesday against Dusan Lajovic, a low-ranked player. This was week one at Wimbledon, a period that usually feels like a vacation for Federer, who has won this title seven times, tied for the most in history. Not this year. Federer, who has lost just two matches this season, skipped the French Open to prepare for the tournament that matters the most to him. There’s pressure. There’s the fact that he hasn’t played many matches recently. And there’s the knowledge—this can’t be escaped—that Federer hasn’t won here since 2012, despite coming close several times.