In a press conference, the Team World Vice-Captain Patrick McEnroe spoke about the reasons why Nick Kyrgios did not play the second singles match on Sunday at the Laver Cup in Geneva. McEnroe said: "Nick has had a little bit of a shoulder issue coming in.
Obviously he was able to play quite well yesterday (Saturday), but I think the amount of tennis he played yesterday just came up this morning, and he was feeling something in his shoulder that had been bothering him but not significantly.
So significantly it was this morning. Tried to warm up twice two different times, and was pretty obvious that he wasn't going to be able to go full out. That's when we knew we had to make a change. Unfortunately, you know, the rules that are in place did not allow us to make the sort of changes that we would have preferred to make, because since it was our turn on Sunday to match up against their players, we were basically denied that once the schedule was put out.
So once Nadal just pulled out, our options were limited. We would have put Shapovalov in as our next player, but because he was matched up against Thiem, we were not allowed to do that. That was the reason for our protests that we decided to wait a little bit before we left the locker room because we don't think that's fair."