The three players will be announced on Tuesday afternoon
Europe's Ryder Cup team will be completed on Tuesday afternoon, when Darren Clarke names his three wildcard picks for the event in Minnesota next month.
Nine players (including five rookies) have already qualified for the team for the matches in Hazeltine National, which may alter Clarke's picks, and force him into picking experienced players.
Europe have won eight of the last ten events, with America's last win coming at Valhalla in 2008. It remains their only win this century.
At 12.30pm in Wentworth, Clarke will name his three players to join the nine that have already qualified. They should come from these five players.
The former World number one was seen as an outsider by many to get the nod from Clarke until a Golf Digest's report on Monday afternoon, claimed the English golfer was set to return to the team for the first time since 2012.
Donald has an excellent record in Ryder Cups. He has never been on the losing team in his four previous appearances. In two Walker Cup appearances as an amateur, Donald was also on the winning team on each occasion.
The German two-time major winner looks to be one of Clarke's more likely picks. A three-time Ryder Cup player, Kaymer holed the putt at Medinah in 2012 that retained the Ryder Cup for Europe after starting 10-6 behind ahead of the final day's singles.
Compared to four years ago, when his game deserted him, Kaymer is in good form and would be a strong addition to the team, with both of his major victories having come on American soil.
Martin Kaymer and Luke Donald were on the winning team together in 2010 at Celtic Manor. Picture by: David Davies / PA Archive/Press Association Images
The Scottish golfer has won twice on the PGA Tour in the past 12 months. Based in America, Knox would have qualified automatically for Europe's team had he had European Tour membership when winning the WGC-HSBC Champions in China last November.
Yet to feature in a Ryder Cup, the World number 20, could be the most high-profile casualty from Clarke's team, Knox currently lies in the top-ten of the FedEx Cup rankings and could thrive on an American course.
Pieters' last three starts have all ended in top-five finishes culminating in last week's win at the Made in Denmark. A fourth-place finish in the Olympics was quickly followed by a second-place finish at the Czech Open which just saw him miss out on automatic qualification.
The 24-year-old is a three-time winner on the European Tour, with all three of those wins coming since August 2015. Last week's win will have given Darren Clarke an unwanted headache.
The most likely of Clarke's three wildcard picks looks to be Lee Westwood. The former World number one is the best friend of Darren Clarke and a resurgent 2016 looks like it has done him enough to make the team for a tenth time.
Come the end of the event in Hazeltine, only Nick Faldo and Phil Mickelson will have played in more Ryder Cups. In a team that will include so many rookies, Westwood's experience will be key.
Westwood and Kaymer look set to take the first two picks with the experience of Donald battling the form of Pieters for the final spot. Knox, despite his excellent form, and knowledge of the American conditions looks like he will have to wait another two years to make his Ryder Cup bow.