Roger Federer has never shied away from showing his emotions on the court throughout his career and on Wednesday, he once again showed that tears are never a sign of weakness among men.

During his exhibition match against Alexander Zverev in Buenos Aires, Federer was surprised with a video message from legendary footballer Diego Maradona. The Argentine called Federer a “master, machine” and the message made Federer emotional, leaving the 20-time Grand Slam winner in happy tears.

"You were, you are and will be the greatest. There’s no other like you. I want you to know that if you have any kind of trouble in my country you can call me and tell me what you need. A big kiss for your wife and your children. You are, like I like to say, a machine, the greatest of all time," Maradona said in a video message, which was played on the big screen inside the stadium.

Federer and Zverev are on a tour through North and South America and that will see them play in five different countries. Wednesday's fixture in Buenos Aires was their second stop in South America, which the 22-year-old German won in straight sets, 7-6 (3), 7-6 (2). The two will head to Bogota on Friday before playing in Mexico City and Quito.

Meanwhile, the doubles' veteran team of Bob and Mike Bryan will join the friendly festivities in Mexico to clash against local favorites Santiago Gonzalez and Miguel Angel Reyes-Varela.

Roger Federer is a six-time champion at the ATP Finals
Roger Federer is a six-time champion at the ATP Finals AFP / Glyn KIRK

In a press conference held in Puerto Madero on Monday, Federer was once again questioned about his retirement plans. For which, the Swiss Master replied, "My retirement is going to depend on my health. At this moment I see no reason to stop. I think in 2009 I questioned it for the first time. [It's been] ten years and here I am. I'm exactly where I wanted to be at this age. It is a lot of work stay. I expected to play until 35-36 and here I am, in a new dimension."

Federer, who missed two match points in Wimbledon 2019 and missed out on a 21st Grand Slam title, clearly has no plans on slowing down despite having turned 38 this year.