1.For the first time in a century, the water in the river Seine is clean enough for swimming. After a clean-up operation that cost €1.6bn, the river hosted the Olympic triathlon events this week. How long is the swim in a triathlon? 999 metres 1.5km Three miles 10km Reveal 2.Rafa Nadal lost two matches at the Olympics this week: in the singles against Novak Djokovic and in the men’s doubles with his playing partner Carlos Alcaraz. Nevertheless, Nadal still boasts an impressive record at Roland Garros. How many of his 116 matches at the French Open has he won? 104 109 112 115 Reveal 3.Barbra Banda scored a hat-trick for the Zambia women’s football team in their 6-5 defeat to Australia at the Olympics. Which British player scored a hat-trick in a defeat to Australia at the last Olympics in 2021? Ella Toone Lauren Hemp Ellen White Nikita Parris Reveal 4.The Irish swimmer Daniel Wiffen won gold at the Olympics this week. Why might his face be familiar to non-swimming fans? He won a cap for the Northern Ireland football team before concentrating on swimming He had a part in Game of Thrones He was the drummer for the band Two Door Cinema Club before he settled on swimming He had a brief stint as Rory McIlroy’s caddy Reveal 5.Canada won the women’s football tournament at the last Olympics in Tokyo, but were in real danger of going out at the group stage in Paris. Going into their final group game they had no points on the board. Why? The coach decided to pick her “B team” in the group stage and they lost their first two matches Canada have fielded an Under-19s team in preparation for the next World Cup All 11 of the players who started the final in Tokyo retired straight after that match They were deducted six points for spying on opponents with a drone Reveal 6.Katie Ledecky has now won gold medals at four Olympic Games. She has also swum the 20 fastest times in history – at what distance? 100m 500m 1,500m 10,000m Reveal 7.Luke Greenbank did not enjoy such fortune in the pool. The British swimmer won his heat in the 200m backstroke with ease but was then disqualified. Why? He forgot to take off a necklace before the race He celebrated before the finish line, which was deemed “Unolympian” His took his swimming cap off before all of the other swimmers had finished He spent too much of the race swimming underwater Reveal 8.World Cup winners Raphaël Varane and Pepe Reina have signed for the Italian club Como to work under which manager? Thierry Henry Daniele De Rossi Cesc Fàbregas Andrés Iniesta Reveal 9.Which country won its first Olympic gold medal this week? (The other three have never won a medal at the Olympics). Cambodia Guatemala Madagascar Malta Reveal 10.Nada Hafez represented Egypt at the Olympics this week in the women’s fencing. Why was her presence at the Games particularly impressive? This is her third Olympics and she has competed in different sports in all three She is seven months pregnant Her daughter is also on the team She gave birth to triplets three weeks ago Reveal 11.Andy Murray played the last match of his career this week at the Olympics. Murray is a two-time Olympic champion, having won gold in London and Rio. Who did he beat in those finals? Roger Federer and Juan Martín del Potro Jo-Wilfried Tsonga and Kei Nishikori David Ferrer and Gaël Monfils Stan Wawrinka and Marin Cilic Reveal 12.Jimmy Anderson retired from Test cricket after England’s series win against West Indies. He is England’s all-time leading Test wicket-taker, with 704 wickets. Who is second on that list with 604 wickets? Ian Botham Stuart Broad Bob Willis Matthew Hoggard Reveal 13.Lewis Hamilton will join Ferrari at the end of 2024. He replaces Carlos Sainz, who has just put pen to paper with which other team? Williams Renault McLaren Mercedes Reveal 14.In an upcoming film about the bust-up between Mick McCarthy and Roy Keane at the World Cup in 2002, which actor will feature as the former Republic of Ireland manager? Liam Neeson Cillian Murphy Steve Coogan Ed Byrne Reveal 15.At the age of 61, Ni Xialian has become the oldest woman to win a match in which Olympic sport? Surfing Table tennis Fencing Shooting