Top seed John Isner has booked his place in the Hall of Fame Open final with victory over Ugo Humbert.
The 34-year-old American came through 6-7 (4-7) 7-6 (7-5) 6-3 against the Frenchman in the clash in Rhode Island.
Isner will meet seventh seed Alexander Bublik in the final after the Kazakh beat Spaniard Marcel Granollers 7-6 (7-5) 6-3 6-4.
At the Swedish Open in Bastad, fifth-seeded Nicolas Jarry progressed to the final with a straight-sets 6-3 6-2 win over Federico Delbonis.
In Saturday's second semi-final, Argentine sixth seed Juan Ignacio Londero overcame Albert Ramos-Vinolas, the 2016 champion, 6-3 6-4.
At the Croatia Open in Umag, qualifier Attila Balazs reached his first ATP Tour final.
The 30-year-old Hungarian, and world No.207, saw off third-seeded Laslo Djere 6-2 6-4 in one hour and 39 minutes.
Awaiting Balazs in the final will be the fourth-seeded Dusan Lajovic after his semi-final opponent Salvatore Caruso retired.
The Italian qualifier sustained a leg injury towards the end of the first set, which Lajovic took 7-5.
Caruso played three points in the second before deciding he could not continue.
