Today is the last day of the Ryder Cup 2014, and the score is 10-6 (see update below for the final score). We have been here before. In the past, this score has been overturned on the last day twice (in fact, every time, see footnote).
Each sport has its super-events which evoke significantly more emotional energy than other events, often inspired by national rivalries. Cricket has The Ashes, golf has the Ryder Cup (see footnote) for men and the Solheim Cup for women, and there are many super-events in other sports. However, the Ryder Cup, unlike the vast majority of professional golf tournaments, is a team event. This raises the question of how their performance depends on collaborative behaviour within the team.