At just 18 years old, swimmer Kyle Chalmers took first place in the men's 100-meters freestyle event at the Rio Olympics. He's the first Australian to win the 100-meters swim since 1968. He shocked the world when he came back from 7th place to steal the win.

His grandparents were watching on TV the whole time. Watching them watch him may be the most heartwarming thing to do all week. Take a look: