Rory McIlroy was forced to point to the crowd to identify hecklers during another Ryder Cup flashpoint on Sunday.The world number two was once again heckled by American fans during his singles match against Scottie Scheffler.NBCMcIlroy had two fans thrown out after his backswing was disrupted on the tenth tee[/caption]However, McIlroy was also made to deal with the sound of squeaky ducks on the final day of action.Spectators at Bethpage Black were given the ducks with the purchase of select drinks at the course.Those fans who have bought a ‘Cherry Fairway Fizz’ also receive the ducks in their drink.This would lead to a tense scene on the tenth tee between McIlroy and the crowd as he attempted to tee off. Several fans squeezed their ducks during the Northern Irishman’s backswing as he also dealt with screaming and heckling on the tee.McIlroy immediately abandoned his backswing and stepped away from the ball before pointing out the offending spectators.According to reports at the course, two fans have been removed for their taunts towards the Masters champion.Following the incident, McIlroy’s tee shot found a fairway bunker on his way to a double bogey.The dropped shots saw him lose the hole to Scheffler, who in turn took went one up in their match.McIlroy produced an instant response on the 11th, though, sinking a stunning birdie putt to once again tie the match with seven holes to play.The Team Europe star was once again subjected to heckles during his singles matchGettySunday’s unsavoury scenes followed a heated second day of foursomes and fourballs on Saturday.The action was overshadowed by constant toxic abuse aimed at McIlroy, including from an announcer.His wife Erica Stoll was left in tears due to the magnitude of the vitriol aimed at the Team Europe star.Meanwhile, the announcer on the first tee issued an apology and stepped down after leading the crowd in crass chanting.Comedian Heather McMahan shouted ‘f*** you Rory’ into the microphone prior to the start of the day’s play.McIlroy dealt with heckles ‘very well’Despite the abuse, McIlroy collected 3.5 points from a possible four across his matches heading into Sunday.McIlroy dealt with the crowd ‘very well’ on Saturday according to Shane LowryGettyThat tally included a two up victory alongside Shane Lowry against Justin Thomas and Cameron Young in Saturday’s fourballs.Speaking after their win, Lowry admitted: “We knew what we were going to get coming here.“It was a very tough day. Being out with Rory doesn’t make it any easier. I think he’s getting the brunt of it. But, look, we dealt with it very well.”Meanwhile, captain Luke Donald said: “What I consider crossing the line is personal insults and making sounds when they are trying to hit on their backswings or very close to when they are trying to go into their routines.“That did happen a little bit. It’s happened at other Ryder Cups.“It’s something we prepared for and I can see how well (McIlroy and Lowry) have dealt with it.”