Del Potro hit a serve during the second-round match, but Almagro didn't chase after it. Instead, he stood with his hands on his knees, clearly fighting pain from a left-knee injury.
Dealing with injuries himself, del Potro rushed over to console his opponent, who had collapsed onto the ground.
Watch the exchange below.
Del Potro comforted Almagro and walked with him over to the seating area. There, he offered the tennis player water and a giant bear hug.
Twitter, of course, was moved by the caring gestures.
They don't call him the gentle giant for nothing... ????— Tennis-Fan (@TennisFan_01) June 1, 2017
True class act. Nothing but ?? for these two— Jim Gregory (@runman317) June 1, 2017
Almagro crying like that is so painful to watch... delpo is such a gentle giant!!!— Archie R (@ArchieR5) June 1, 2017
heartbreaking for Nico and so frustrated. Delpo, hands up ?? sportsmanship ????— Ericka Morales (@emorales35) June 1, 2017
if anyone was still wondering why everybody loves delpo, there you have it— Jens (@Kiddel) June 1, 2017
And one user wondered what she could do for a famous del Potro hug. (Same.)
Del Potro hugs are the best! I want one! I wonder how I can make that happen. ????— Candice Graham (@candygraham0813) June 1, 2017
This isn't the only time a professional sports player has demonstrated empathy on the field or court, though.
In 2016, U.S. Olympic runner Abbey D'Agostino and New Zealand Olympic runner Nikki Hamblin tripped over each other during a heat for the 5,000-meter race at the Rio games. According to Boston.com, D'Agostino helped Hamblin up and whispered, "Get up. We have to finish this." They finished together and hugged, despite injuries for both athletes. (D'Agostino needed a wheelchair at the end of the event.)
During a cross-country race in December 2012, Abel Kiprop Mutai of Kenya was in the lead, HuffPost reports. He thought he had finished the race before he actually had. This gave Spanish athlete Ivan Fernandez Anaya the perfect opportunity to beat his opponent.
Rather than taking advantage of Mutai's confusion, though, Anaya directed Mutai to the finish line.
A little compassion goes a long way — in the world of sports, and the world itself.
Banner/thumbnail credit: Flickr user Dave Lowensohn