Emma Raducanu swept aside Slovakia's Rebecca Sramkova to reach the quarter-finals at Queen's and will now regain her place as British number one for the first time in two years.
The Briton was largely untroubled against world number 41 Sramkova, winning 6-4 6-1 on a packed Andy Murray Arena.
The 22-year-old smiled between points after she overcame a wobble in the first set – where she lost four games in a row while trying to see off the opener.
Raducanu is the last Briton standing at the first women's tournament at Queen's since 1973 after compatriots Katie Boulter and Heather Watson exited in the last 16 earlier on Thursday.
Watson lost 6-4 6-2 to 2022 Wimbledon champion Elena Rybakina, while Boulter fell 2-6 6-3 6-2 to Diana Shnaider and will now relinquish her title as British number one, which she has held since June 2023.
Raducanu only had to equal Boulter's run at Queen's to overtake her in the rankings and a place in the quarter-finals will put her in Britain's top spot when the official rankings are updated on Monday.
She earned the position after winning the US Open in 2021 but slipped down the rankings after a period of inconsistent form and injury struggles in 2023, when Boulter replaced her.
The rivalry for top spot is perhaps not all that intense, though, as Raducanu wrote "long live Boultucanu" - a shout-out to their doubles partnership - on the camera lens after her victory, with the pair clearly firm friends.
This week, Raducanu has looked relaxed and largely in control, coming through both of her matches in straight sets and taking part in some doubles action alongside compatriot Boulter for the first time.
She has quickly made the west London tournament feel like home and that was no different on Thursday as she took in the adulation from the crowd.
A dream start for Raducanu left her serving for the set at 5-0 but what had looked like a stroll in the park quickly turned uncomfortable as she lost the next four games.
Serving for the set again at 5-4 she eventually shut out with a love hold to a huge ovation from the Queen's crowd.
The second set followed a similar pattern, with Raducanu dictating points and earning a triple break of serve.
This time she did not allow Sramkova back in, sealing victory in style and thanking the crowd for their "roar of support" in her on-court interview.
Boulter may have sat at the top of British women's tennis for two years but, with Raducanu looking back to somewhere near her best, we could see the two battling for the top spot in British women's tennis on a regular basis.
Her last-16 defeat by Shnaider comes as a disappointment in the same week that last year she was winning the title in Nottingham.
But, bidding to reach a seventh quarter-final on grass, Boulter had expressed concern about her serve earlier in the week, suggesting she would be working on it in the build-up to this match.
No such troubles were apparent in the opening set as Boulter continually caused problems behind her first serve.
Having saved a break point, then secured an impressive break to love with a crowd-pleasing volley, Boulter battled to consolidate with an important hold and saved another break point along the way.
She then took the double break with a sweeping forehand, before more solid serving handed Boulter the opening set as rain threatened to come down.
But by the time the umpire suspended play because of a downpour, Boulter was down a break at 4-1 in the second set and in trouble on serve again.
After a 20-minute rain delay, she returned to have her serve broken for a second time and, despite recovering one break, she could not prevent Shnaider from forcing a deciding set.
Boulter once again came under pressure in the opening game, wiping out three break points to secure the hold as problems on serve returned with a vengeance.
She saved more break points in her next service game, only to double-fault and concede the break.
From there, Boulter struggled to regroup and went down a double break.
She could not find a way back from there, missing out on a fifth quarter-final in a WTA 500 event as Shnaider set up a meeting with American second seed and Australian Open champion Madison Keys.