Roger Federer recently won his first Mercedes Cup title in Stuttgart by defeating Milos Raonic in straight sets. The week of work got him back up to No. 1 but the victory may turn out to be a bad omen going into Wimbledon.
Since 2015, every Stuttgart champion has lost in the second round of the grass-court Grand Slam. That year also marked the tournament moving from after Wimbledon to a few weeks before. The unlucky 2015-2017 winners include Rafael Nadal, Dominic Thiem and Lucas Pouille. .