Simona Halep and Roberta Vinci will contest the final of the Bucharest Open after semi-final wins on Saturday.
Fabio Fognini will not retain his Mercedes Cup title in Stuttgart after losing his semi-final on Saturday.
Pablo Cuevas will contest his first senior final on Sunday after beating Fernando Verdasco in the SkiStar Swedish Open.
Jack Sock stunned top seed John Isner in the quarter-finals of the ATP Hall of Fame Tennis Championships in Newport.
Defending champion Carlos Berlocq upset top seed David Ferrer to move into the semi-finals of the Swedish Open.
Top seed and defending champion Fabio Fognini has booked his place in the semi-finals of the ATP Mercedes Cup.
Simona Halep eased into the semi-finals of the Bucharest Open with a straight-sets win over Lara Arruabarrena.
Shelby Rogers reached her first WTA semi-final with another convincing win in the Nurnberger Gastein Ladies.
Lindsay Davenport and Briton John Barrett will be inducted into the International Tennis Hall of Fame this weekend.
Sam Groth beat defending champion Nicolas Mahut at the Hall of Fame Championships to reach his first ATP semi-final.