atheltic games and contests, 1590s, from sport (n.). Meaning "sports section of a newspaper" is 1913. As an adjective from 1897. Sports fan attested from 1921. Sports car attested by 1914; so called for its speed and power:
I have just returned from the south of France, passing through Lyons, where I visited the [Berliet] works with my car, and was shown the new model 25 h.p. "sports" car, and was so impressed with this that I immediately ordered one on my return to London. [letter in The Autocar, Jan. 7, 1914]
"action of wearing" (clothes), mid-15c., from wear (v.). Meaning "what one wears" is 1560s. To be the worse for wear is attested from 1782; noun phrase wear and tear is first recorded 1660s, implying the sense "process of being degraded by use."
<a href="https://www.etymonline.com/word/sportswear">Etymology of sportswear by etymonline</a>
Harper, D. (n.d.). Etymology of sportswear. Online Etymology Dictionary. Retrieved $(datetime), from https://www.etymonline.com/word/sportswear