She walked away. Now she's back. And the tennis world is absolutely buzzing.

Serena Williams is making a comeback to professional tennis, partnering with rising star Naomi Mboko in doubles competition, ESPN reports. The announcement has sent shockwaves through the sport.

Let me ask you this: why? Serena Williams has nothing left to prove. Twenty-three Grand Slam singles titles. Four Olympic gold medals. The greatest women's tennis player of all time. She retired, she had a baby, she moved on with her life. So why come back now?

Here's what I think, folks - Serena misses it. She misses the competition, the crowd, the feeling of being out there on the court. Not in singles - those days are done, and she knows it. But doubles? That's a different animal. Less wear and tear, more fun, still competitive.

And partnering with Mboko is brilliant. The young Kenyan star gets to learn from the greatest, and Serena gets to play without carrying the entire load. It's a win-win.

"I never thought I'd play professional tennis again," Williams said in the announcement. "But when this opportunity came up, something inside me said yes. I've still got some tennis left in me."

Will they win tournaments? Who knows. But that's not really the point. The point is that one of the all-time greats isn't quite ready to ride off into the sunset. She's got the itch, and she's going to scratch it.

Tennis just got a whole lot more interesting, folks. Serena Williams is back. That's what sports is all about - the love of the game never really leaves you.