Tennis Fans Debate Mouratoglou's Serena Best Ever Claim

So, Patrick Mouratoglou, Serena's old coach, calls her the best ever, and fans are like, 'Whoa, hold your horses!' They're debating like it's the Super Bowl of tennis! Some think Martina Navratilova should wear the crown, while others shout for Steffi Graf! But come on, Serena's got 23 trophies—she's doing something right, right?