Photo: Mathilde DusolDorrie Timmermans-van Hall (NED) and Antonio Raffaele (ITA)
The quad doubles and women's doubles finalists were decided on the third day of the Invacare Doubles Masters at the Frans Otten Stadium in Amsterdam as the round-robin group matches in all three of the events came to end, with an exciting conclusion to the men's group matches to decide which partnerships progress to the semifinals.
Timmermans-van Hall and Raffaele win through to face Taylor and Wagner
Dorrie Timmermans-van Hall of the Netherlands and Italy's Antonio Raffaele, both former Doubles Masters finalists with different partners, will take on American top seeds and four-time champions Nick Taylor and David Wagner in Saturday's quad final.
Timmermans-van Hall and Raffaele, who only gained a late place in the event after the 2010 champions withdrew, combined successfully as they eased through the first set of their crucial final group match against second seeds Bryan Barten of the USA and Sweden's Anders Hard.
With both partnerships coming into the contest with one victory from their first two matches, Barten and Hard put up a brave effort to try and stay in the match and the hunt for a place in the final, but Raffaele and Timmermans-van Hall eventually wrapped up a 62 76(5) victory.
Taylor and Wagner, the champions in 2005, 2006, 2007 and 2009, will go into Saturday morning's final as warm favourites after completing the round-robin phase of the competition unbeaten, having swept past Italian duo Marco Innocenti and Giuseppe Polidori 62 61.
All-Dutch women's doubles decider revisits Grand Slam finals
The second final to be decided in Amsterdam was in the women's doubles as Esther Vergeer and Sharon Walraven and Jiske Griffioen and Aniek van Koot won through to set up a rematch of all four of the Grand Slam women's doubles finals this season.
Vergeer and Walraven go into Sunday's final still unbeaten for the season after comfortably overcoming the British partnership of Lucy Shuker and Jordanne Whiley In their final group match. Walraven and Vergeer sealed a 63 61 victory as they maintained a strong bid to win their first Doubles Masters title a partners.
Griffioen and van Koot, who were taken to three sets by their fellow Dutchwoman Marjolein Buis and Annick Sevenans of Belgium in the semifinals of September's US Open in New York, managed to close out the latest contest between the two partnerships in straight sets at the Frans Otten Stadium as they prevailed 64 63.
Sunday's final should be a fascinating encounter, with Griffioen and van Koot having taken Vergeer and Walraven to a third set in each of their last four encounters, including the 2011 Roland Garros, Wimbledon and USA Open finals and the second of their group matches in Amsterdam on Thursday.
Scheffers Vink and Ammerlaan Houdet to meet in 2011 men's semi-finals
There will be no repeat of the same final in the men's event for a third successive year, with defending champions Maikel Scheffers and Ronald Vink of the Netherlands and second seeds Robin Ammerlaan of the Netherlands and Stephane Houdet of France set to meet each other in Saturday's cross-over semifinals.
Both of the top two seeds were involved in tight matches on the last day of round-robin competition, Beijing Paralympic bronze medallists and three-time Doubles Masters champions Scheffers and Vink edging out Beijing silver medallists and 2008 Doubles Masters champions Stefan Olsson and Peter Vikstrom of Sweden 61 36 64 to claim second place in Group A.
Meanwhile, Ammerlaan and Houdet came from 5-4 down in the first set of their match against British duo Marc McCarroll and Gordon Reid to win 75 63 and top their pool with three wins from three matches.
Young Dutchman Tom Egberink and Michael Jeremiasz of France, a former Doubles Masters champion himself, continued to demonstrate their live title credentials when they eased past Frederic Cazeaudumec of France and Martin Legner of Austria 61 63 to top Group A.
Egberink and Jeremiasz face 2009 semifinalists Frederic Cattaneo and Nicolas Peifer in their quest to reach Sunday's final after Cattaneo and Peifer reinforced their position as the top all-French pairing in the 2011 Invacare Doubles Masters with a 61 64 victory over their compatriots David Dalmasso and Lahcen Majdi.
As well as the semi-finals, Saturday's penultimate day of play will include both the fifth and sixth place play-off in the men's events, featuring Olsson and Vikstrom and McCarroll and Reid, and the seventh and eighth place play-off involving Cazeaudumec and Legner and Dalmasso and Majdi