And there really has been plenty to enjoy, hasn't there?

Just take a look at this winner from Serena Williams. You know it's good when the 23-time major singles champ surprises even herself...

Serena's daughters Olympia and Adira River are enjoying their mum's comeback.

Image source, Reuters

Emily Salley
BBC Sport at Queen's

Wow. There's a huge cheer around Andy Murray Arena as Serena Williams and Victoria Mboko take the first set against the third seeds.

One thing is for sure after that opening set, Williams has still got it. She doesn't look at all out of place.

Four set points earned, but only one needed.

Serena Williams, partnered by the excellent Victoria Mboko, has won her first set of tennis since 2022!

Victoria Mboko steps up to serve with a 5-2 lead in the tie-break following a double fault by Nicole Melichar-Martinez.

A miss by Erin Routliffe follows intense pressure from Serena Williams, setting up four set points!

Emily Salley
BBC Sport at Queen's

I think most current players on the WTA Tour would be delighted to have a serve like the 44-year-old Serena Williams.

No stopping those at 120mph.

A big first serve from Serena Williams helps extend the run of points to four, but the American is unable to further tighten her team's grip on the tie-break as she knocks a forehand into the net from the baseline.

A superb return by Victoria Mboko, followed by a double fault from Erin Routliffe, gifts Mboko and Serena Williams the perfect start to the tie-break.

Image source, Reuters

Victoria Mboko does brilliantly to stay in a rally and Erin Routliffe misses a routine volley at the net.

This is a big chance for Mboko and Serena Williams here, just two points from the set at 0-30...

But Nicole Melichar-Martinez gets over the line after Mboko narrowly misses the baseline with a lob after a lengthy rally.

To a tie-break!

Good movement by Serena Williams to progress up the court after a couple of big baseline strikes, but her attempted sliced volley at the net falls short.

Wow! Williams records the fastest serve of the match so far as she slams down a 120mph bullet to win an important fifth point at 30-30, and Nicole Melichar-Martinez completely overhits a volley to concede the game.

Williams and Mboko are guaranteed at least a tie-break in their first set together.

Erin Routliffe holds serve to extend the first set after Serena Williams drops a forehand into the net.

There's another buzz of excitement as the American takes over serving duties.

Even Serena Williams surprised herself there!

The American lands a stunning two-handed backhand at the back of the court before turning to team-mate Victoria Mboko with a beaming smile on her face.

It's greeted by arguably the loudest cheers we've had so far, although there is stiff competition in that regard, and it ensures Canadian Mboko holds serve.

Famous faces have gathered to catch a glimpse of this one.

Lindsey Vonn, regarded as one of the greatest alpine skiers of all time and still recovering from a devastating crash at the 2026 Winter Olympics, is among those watching from the balcony.

Back on the court, Nicole Melichar-Martinez holds serve comfortably to bring things level at four games apiece in the opening set.

Emily Salley
BBC Sport at Queen's

There's maybe the first sign that Serena Williams isn't the player she once was.

The 23-time Grand Slam champion was never known for her speed, but she looks a bit off the pace there as she attempts to dart forward and reach a drop shot.

And maybe I spoke too soon about the serve. A double fault by Williams hands Erin Routliffe and Nicole Melichar-Martinez a break back.

Image source, Getty Images

Oh no! A double fault from Serena Williams and we're back on serve in the first set.

Work to do for Serena Williams, down 15-30 on serve.

Boom! The American follows up a first serve by unleashing a ferocious volley to level the game.

She can't quite get to a drop shot in time, however, and will face a break point here.

Emily Salley
BBC Sport at Queen's

That serve still seems to have the ability to sting opponents.

Nicole Melichar-Martinez had no reply to that one.

Great hustling at the net by Serena Williams and she eventually gets the point to begin making inroads on Erin Routliffe's serve.

They recover to 40-30 with back-to-back points, but the New Zealander gets the hold after a dizzying back-and-forth involving all four players. Great stuff.

The TV camera pans around Andy Murray Arena. There isn't a spare seat in the house, while the players' balcony is also packed.

Here's the moment Serena Williams made her return to the tennis court at Queen's.

Just listen to that reception!

It's going pretty well so far, too...

Victoria Mboko is looking super solid from the back of the court here and is putting far too much on some of these groundstrokes for her opponents to handle.

The 19-year-old certainly doesn't appear to have any nerves despite the global attention on this match, and she gets another high-five from team-mate Serena Williams after the American seals another game with a big smash.