The normally mild-mannered Roger Federer argued with an umpire and smacked his racket on the ground before crashing out of the Indian Wells final

Getty Images

• Roger Federer was incensed during his Indian Wells Masters final loss to Juan Martín del Potro on Sunday.
• Federer argued with the match umpire, smacked his racket on the ground, and lost his cool in the California heat.
• The Swiss ace said he was not sure how long it will take to get over the loss, but he is back in action in the Miami Open this week.

World number one tennis player Roger Federer lost more than the Indian Wells Masters final on Sunday — he also lost his cool.See the rest of the story at Business Insider

NOW WATCH: Richard Sherman rails against the NFL's pre-draft process and explains why some of the combine is 'outdated'

See Also:

• 18 high-paying jobs for people who hate math
• Will Ferrell gate-crashed the commentary booth for a Roger Federer match and wreaked havoc
• Russian tennis star Maria Sharapova is being slammed on Instagram for posing with a US flag

SEE ALSO: Will Ferrell gate-crashed the commentary booth for a Roger Federer match and wreaked havoc