Andrey Rublev and Jaume Munar reached the Next Gen Finals last four with wins on Thursday, joining Alex de Minaur and Stefanos Tsitsipas, who both have 100 per cent records.
Russian 2017 finalist Rublev was outclassed by De Minaur on Wednesday but bounced back 24 hours later, following the Australian through from Group B.
Winless wildcard Liam Caruana went down 4-3 (9-7) 4-1 4-2 to leave Rublev far more satisfied with his performance as he approaches a semi-final against Tsitsipas.
"This was a completely different performance," he said. "My attitude, I think, was the best attitude out of these three matches.
"I was focused. I was not complaining. I was trying to fight for every point because I know that every point for me costs a lot. I was just trying to win each point, every point, doesn't matter the score."
UNBEATEN @alexdeminaur d. Fritz 4-3(8), 4-1, 4-2 and crowns himself Group B winner; @AndreyRublev97 finishes second in Group B and advances to the @nextgenfinals SF.#NextGenATP pic.twitter.com/G1iCHUHiYN— ATP World Tour (@ATPWorldTour) November 8, 2018
De Minaur was similarly dominant as he won his third straight match in Milan after a shaky first set, defeating Taylor Fritz 4-3 (10-8) 4-1 4-2.
"I'm really proud of my effort and I'm looking forward to what's next," De Minaur said.
And Munar completed the last-four line-up as the already-qualified Tsitsipas beat Hubert Hurkacz 4-1 4-3 (7-2) 4-1 in the day's late game.
Hurkacz still had the opportunity to progress ahead of that clash, but he was blown away and Munar - who ended Frances Tiafoe's hopes earlier on Thursday - instead went through.
Munar had joked after a rampant 4-1 4-3 (7-3) 4-1 triumph: "I did what I had to do and it's not in my hands anymore. Maybe we can buy a Greek flag or whatever for support."
|Mickelson calls Tiger the greatest of all time|
|Durant fined $25,000 for using inappropriate language|
|Fizdale isn´t concerned about Knicks´ losing streak|
|No particular concern for Mbappe – Deschamps|
|PSG team-mate Choupo-Moting hopes Neymar injury is not serious|
|McLeish marvels at stylish Scotland´s promotion success|
|Draw proves Poland can play well without Lewandowski – Brzeczek|
|Giggs: Wales let themselves down|
|Sarachan ´moved USA forward´ in interim spell|
|Mickelson lays $200,000 bet with Woods for first hole|
|Dolphins QB Tannehill to start against Colts|
|Murcia edge out Banvit, Bonn crush Opava|
|Neymar injury not serious, says doctor|
|Mancini: Italy ahead of schedule|
|France 1 Uruguay 0: Giroud hits the spot after Mbappe injury blow|
|Portugal 1 Poland 1: Milik penalty salvages precious point as Danilo sees red|
|Italy 1 United States 0: Politano snatches late winner for Mancini´s men|
|Scotland 3 Israel 2: Forrest hat-trick seals Nations League promotion|
|Brazil 1 Cameroon 0: Richarlison fills Neymar´s boots as skipper suffers injury|
|France & PSG star Mbappe suffers shoulder injury|
|Albania 1 Wales 0: Gunter´s night spoiled by Balaj|
|Leeds and Manchester United to meet in friendly|
|Outspoken Smith leaves Cavaliers|
|PSG star Neymar injured for Brazil|
|Juventus midfielder Can back in training after surgery|
|Rams-Chiefs rollercoaster was the NFL´s modern-day masterpiece|
|Ronaldo an AC Milan target in 2017, confirms Fassone|
|Farah could get back on track at Tokyo Olympics|
|PSG still waiting on Alves and Kurzawa|
|Atalanta reject Gasperini to AC Milan speculation|
|Edmonton Oilers name Hitchcock new head coach|
|JR Smith on Cleveland Cavaliers: Tanking ´was always the plan´|
|Chester signs new Wakefield deal|
|F1 Raceweek: Countdown on to Alonso farewell|
|Rain disrupts Lorenzo´s Honda debut|
|VAR a possibility for Champions League knockout rounds|
|FFP vulnerable in areas, says UEFA president Ceferin|
|Sri Lanka draft in uncapped Peiris to replace Dananjaya|
|Coman back in Bayern training but Lewandowski has knee injury|
|Qalandars land De Villiers in PSL draft, Smith second pick|
|F1 changes helped less talented drivers on the grid - Alonso|
|Agnelli: No super league talks since 2015|
|I hope from now on it only gets better - Floersch update on horror crash|
|Calf injury rules Ashton out of Australia match|
|Halfpenny to miss South Africa clash|
|Hard for Lazio to hold on to Milinkovic-Savic, says Lotito|
|Australia´s next generation pay tribute to retiring Cahill|
|Bairstow pushing hard for Test recall|
|Cane eyes 2019 Super Rugby return after neck break|
|Van Dijk finds time to console referee during Dutch delight|
|Cahill sheds tear at end of phenomenal Australia career|
|WATCH: Pelicans coach Gentry interviews himself|
|Where does Chiefs-Rams classic rank among NFL´s highest-scoring matches?|
|Australia 3 Lebanon 0: Boyle bags brace on Cahill farewell|
|Guendouzi underlines desire to represent France|
|I might need a couple of drinks to relax after that! - Rams coach McVay|
|Juventus´ Alex Sandro has Premier League ambition|
|Ederson taking goalkeeping to another level, says City hero Weaver|
|Ceferin dismisses "super league" plans as fiction|
|Rams defeat Chiefs in one of the highest scoring games in NFL history|
|Kemba Walker leads Hornets to win over Celtics|
|Gomez praises ´top player´ Van Dijk, Stones|
|Cricket Australia to maintain Smith, Warner ball tampering bans|
|Brazil´s Tite encouraged by Neymar captaincy|
|Holmes set for NFL switch after Cronulla release|
|Dier encourages English youngsters to follow Sancho´s lead|
|Southgate promises further changes to England squad|
|Jones sceptical over Pocock injury|
|Sane encouraged despite Germany´s ´annoying´ Nations League draw|
|Character got Netherlands through, says Koeman|