Sports from Tony Stark

Martial arts

Martial arts are codified systems and traditions of combat practiced for a number of reasons such as self-defense; military and law enforcement applications; competition; physical, mental and spiritual development; and entertainment or the preservation of a nation's intangible cultural heritage. Although the term martial art has become associated with the fighting arts of East Asia, it originally referred to the combat systems of Europe as early as the 1550s. The term is derived from Latin and means "arts of Mars", the Roman god of war. Some authors have argued that fighting arts or fighting systems would be more appropriate on the basis that many martial arts were never "martial" in the sense of being used or created by professional warriors.
Tony Stark
Entrepreneur, Scientist, Superhero
He wasn't trained by Captain America only. He was also trained by Black Widow, Shang Chi and Black Panther. All three of those people are one of the best fighters of the Marvel Universe. Shang Chi has skill comparable to Daredevil and T'Challa is rivaled only by the likes of Captain America and Danny Rand Iron Fist.