When you buy through our links, Business Insider may earn an affiliate commission. Learn moreNovak Djokovic and Iga Swiatek hold their 2023 French Open trophies.Quality Sport Images/Getty Images (left); Susan Mullane-USA TODAY Sports (right)The second Grand Slam of the year is officially here, and the best tennis players from the ATP and WTA tours are duking it out on the courts of Roland-Garros in Paris.