Alexander Zverev watched Rafael Nadal and Roger Federer from the stands.

Instead of battling on the court for Team Europe, Alexander Zverev watched the opening day of the fifth edition from the stands at London’s O2 Arena.

The German hasn’t played since that horrific injury in the Roland Garros semi-final against Rafael Nadal and will likely miss the rest of the season. Zverev tore several lateral ligaments in his right foot during that grueling Roland Garros match and was injured again a few weeks ago before the Davis Cup.

Although he was unable to play, Alexander traveled to London on Friday and watched the thrilling doubles match on the opening day of the Laver Cup. Roger Federer retired from tennis after the doubles match, joining arch-rival Rafael Nadal one last time in official matches.

Roger Federer ended his career at the Laver Cup in London.

Nadal and Federer took on Jack Sock and Frances Tiafoe and wasted match point in a 4-6, 6-2, 11-9 loss in two hours and 13 minutes.

It was one of the most emotional nights in tennis history, with the spotlight shining on the 20-time Majors champion and his incredible career. Nadal wasn’t feeling well after his early loss at the US Open, but he headed to London anyway and joined his friend for one last rodeo providing a nice level of tennis and an epic match for the fans in attendance for bid farewell to one of the gods of sport.