When Great Britain take on Argentina in the semi-final of the Davis Cup this week, Andy Murray and Juan Martin del Potro will contest the opening match.
But with all the Grand Slams over for the season, this is sure to be a laid back sort of match, right? Well it just so happens these two met in the Olympic final in Rio last month, so we thought we'd take a look back to see just how tranquil games between these two can be.
See how carefree Del Potro is here? Not a care in the world!
Andy Murray there, just having a quick stretch.
Stretching left and stretching right. Got to have a balanced warm up.
Del Potro pulls a face at Andy, such is the easy-going nature of the game. You can't see, but Andy's doing a crossword on the baseline.
Hmm, that looks a little tasking.
Is that a pained expression on the Argentinian's face? Doesn't look so relaxing to me.
Err, guys? The sun's gone in. How long have you been playing?
That's not sweat, is it?
OK, so it looks like this might be hard work.
Yeah, that's definitely not a relaxed face. Anything resembling Edvard Munch's The Scream seems to indicate distress.
It's OK Andy, it's over. You won. We're sorry we doubted you.
Just give them a moment. At four hours and two minutes, they must be pretty shattered after that final.
See you on Friday for more of the same, fellas?