Sinner didn't show sportsmanship at all. While Gregor was having a discussion with the doctor, which should be private, sinner went over and stood right next to them listening in. That's inexcusable behaviour.

We're you even watching it? He was trying to give some emotional support to a player who obviously, beyond obviously, was upset as he knew he had to retire. Massive respect between the two and clearly some friendship there. Sinner helped him grab his stuff to go off court in the end. Crazy what people find to complain about when they could easily acknowledge how well Sinner coped and assisted while his opponent went through hell.