Serena Williams—23-time Grand Slam champion, GOAT and world No. 1 for 319 weeks—can still struggle with solving a simple crossword clue just like anyone else. A friend of hers asked for help for a clue that had nothing to do with aces, but serving is Williams' greatest weapon and never far from her mind.

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Williams got to the right answer eventually and that's all the matters. The 37-year-old won 79.1 percent of her service games in 2018 and finished at No. 20 in the WTA aces leaderboard after playing just seven events (the top spot belongs to Julia Goerges).