Jannik Sinner's phone might have given away a major development about his love life. The No. 1 men's tennis player in the world reached the 2025 US Open quarterfinals with a dominant win over Alexander Bublik on Monday, September 1, but Sinner's off-the-court escapades also drew the attention of tennis fans over the weekend. Following Sinner's third round victory over Dennis Shapovalov on Saturday, August 30, a sleuth on TikTok noticed something interesting on the Italian tennis star's phone. "Jannik Sinner has a photo of Laila Hasanovic on his lock screen so the rumours are...