U.S. Open winner Naomi Osaka explained to NBC's Today on Monday that she felt like "everyone" was "unhappy" when she beat Serena Williams for her first Grand Slam title Saturday. Osaka said she felt like she "had to apologize" because she knew many people wanted Williams to win. She trounced Williams 6-4, 6-2, but the match came to a sudden end when the chair umpire penalized Williams a full game; she had sparred with him after he ruled that she'd received illegal coaching. Williams was fined $17,000 on Sunday for the violations. The controversial calls sparked outrage from the crowd, and Osaka said Monday that she "felt a little bit sad because I wasn't really sure if they were booing at me."

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