I'm still looking for the key," says Shelton, defeated 5 times by Zverev

Alexander Zverev defeated Ben Shelton this Sunday at the ATP Finals in Turin. The German won for the 5th time in as many encounters between the two men.

Asked in the post-match press conference about what he needs to do to finally beat Zverev in the future, Shelton replied: "I improved as the match went on. If I had converted just one of those set points in the second set, we might be talking about something else.

Yes, the truth is that today, I felt I had more control than in our previous matches against him, even though I'm still looking for the key. I made too many unforced errors, especially on the forehand. I didn't play my forehand the way I wanted to. I know that's an area I need to improve.