SI Insider: Breaking Down A Wild Final In The U.S. Open Men's Tournament

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While Dominic Thiem came away with the win, SI senior writer Jon Wertheim says it wasn't the best tennis we've ever seen in a men's final.

Thiem has lost three other finals to superstars, and while he is widely considered to be the one to take the mantle as best in the world after the big three have retired, a fourth loss in the U.S. Open could've spelled disaster for his promising career.