Majority of the field at the ATP Finals have been scheduled to practice at the O2 Arena on Monday, and Marin Cilic and Alexander Zverev, and Novak Djokovic and John Isner are to play their singles matches in London on the same day.
However, Roger Federer was supposed to take a different approach and work in the indoor court at Queen's, just like he did against the junior no. 1 Chun Hsin Tseng a few days ago. Nonetheless, the six-time ATP Finals champion decided to cancel Monday's practice session which raised further concerns about his current form after Sunday's tough loss against Kei Nishikori in straight sets.
Roger claimed his 99th ATP title at home in Basel despite not playing his best tennis and he gave his all against Novak Djokovic in the semi-final in Paris, losing after more than three hours despite not having lost his serve once in the match.
Alongside Novak, Roger is the main favorite to win in London, making his 16th appearance at the ATP Finals and seeking his seventh title at the premium ATP event, the first since 2011. Nonetheless, the first match was far from good for the great champion, scoring only his fourth loss in the opening match at the ATP Finals after Kei Nishikori toppled him 7-6, 6-2.
Roger looked nervous and inconsistent on the court despite facing only two break points. He lost his edge in crucial moments and also his temper after throwing a ball into the crowd that saw the umpire give him a code violation.
Roger is scheduled to play his second round robin match against Dominic Thiem on Tuesday and he has to win this match in order to stay in contention for the place in the semis, although we have to wait for his next steps after canceling Monday's practice session.