The first quarter of 2017 is in the books, and before the WTA tour turns to the European red clay, it’s time to take one last look back at the Top 5 moments that have shaped the season thus far.

The No.1 moment on our countdown is a record-breaking achievement that went down in tennis history…

Serena Cements Her Place In Tennis History: There was one word that dominated the tennis headlines in January: “history.” It’s what was on the line at the Australian Open final when Serena Williams and Venus Williams took to the court for the first all-Williams final in Melbourne in 14 years.

And 81 minutes later, Serena took home the title – without dropping a set or even facing a tiebreaker during the entire tournament – and rewrote the history books with an Open Era record 23rd Grand Slam title.

SHE’S DONE IT! No. 23@serenawilliams is your #AusOpen 2017 women’s singles champion. ? pic.twitter.com/LC6fpWi3Ik

— #AusOpen (@AustralianOpen) January 28, 2017

“It’s such a great feeling to have 23,” Serena said after the match. “I’ve been chasing it for a really long time. When it got on my radar, I knew I had an opportunity to get there, and I’m here. I’m here.

“It’s a great feeling, and no better place to do it than Melbourne. My first Grand Slam started here, and getting to 23 here, but playing Venus, it’s stuff that legends are made of. I couldn’t have written a better story.”

Not only was the win Serena’s 216^th at Grand Slam tournaments, improving on her already-record total, but it also restored her place at the top of the WTA rankings, returning to World No.1 for the first time since the 2016 US Open.

Her season would come to a halt after the Australian Open, though. Serena withdrew from Indian Wells and Miami before announcing earlier this week that she was expecting her first child in the fall.

But Serena stands alone on our countdown – much like she does in tennis history – and her record-breaking feat at the Australian Open is the No.1 moment of the 2017 season to date.

The Top 5 Moments That Marked 2017 So Far:

5) The Future Is Now: Teen Titans Crash WTA Party: Kasatkina, Vondrousova Take Titles To Start 2017
4) Slow & Steady Wins The Race: Wozniacki & Svitolina’s Hot Streaks Lighting Up 2017
3) Veterans Victorious: Venus & Lucic-Baroni Loom Large To Start 2017
2) Sunshine Sweeps: Vesnina & Konta Capture Career-Best Titles To Start 2017
1) Serena, Unparalleled: Serena Makes History With 23rd Grand Slam Title To Start 2017