There was a familiar, solemn face courtside when Alex Zverev took Novak Djokovic apart to win the ATP Finals across London in November.
On the German's bench that evening was Ivan Lendl, the stone-faced Czech who did so much for Andy Murray. He and Zverev are reunited at Wimbledon this year with the world No 5 hoping he can be his less-than-secret weapon.
For the 22-year-old blond from Hamburg, the challenge remains the same — trying to bring his best game when it matters most, at the Grand Slams.
Alex Zverev begins his 2019 Wimbledon campaign on Monday against Jiri Vesely
Zverev will be hoping Ivan Lendl will be his less-than-secret weapon at Wimbledon this year
Ahead of the start of Wimbledon, Zverev insists Lendl 'brings the champions mentality still'
Best finishes of two quarter-finals at the French Open are still considered a poor return for one who has achieved so much elsewhere.
'Actually he talks most of the time about golf,' said Zverev, sitting on the Centre Court on Friday, temporarily downplaying the importance of Lendl.
Then more seriously he continued: 'He brings the champion's mentality still, he teaches you how to win these kind of tournaments, how to act and I think when I reach the semi-final and finals he can be the one that gives me an extra edge. I think it will fall into place soon.'
Being back in London rekindles the memories of November, although beating the top eight in the year-end championships has not proved quite the launchpad Zverev wanted.
'It was the biggest title of my career but I hope that has changed by two and a half weeks' time,' he said. 'The O2 was very special for me because it's a unique tournament, you have to play top guys right from the start. I played Novak in the group stages and lost to him, but I learned stuff for the final, played more aggressively. I felt great in the
