Reaction: Outrage around violations against Serena; praise for Osaka

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Serena Williams: I've seen men call umpires several things (2:37)

Serena Williams talks about the coaching warning she received during the US Open final and whether she would have changed anything from the match. (2:37)

NEW YORK -- What was supposed to be a scintillating women's final at the US Open devolved into a match marred with controversy.

Serena Williams, in a straight-sets loss to Naomi Osaka in the US Open final, was handed code violations: first a warning for coaching, then a point penalty for smashing her racket and finally a game penalty for verbal abuse. Was it fair?

Tennis players, former and present, experts and even Williams' coach, Patrick Mouratoglou, weighed in on the chair umpire's decisions:

Japan's prime minister, Shinzō Abe:

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Evert: Every coach coaches

Analysts on ESPN's set discuss the moments of controversy in the US Open women's final between Naomi Osaka and Serena Williams.