| 15/5/2021 | Argentinian Javier Ubides enters as a substitute for Atromitos against Volos in the last game of his career at Peristeri, scoring the winning goal (1-0) |
| 15/5/2018 | Olympiakos defeats Vouliagmeni with 9-6 in Piraeus, making the 3-0 in the finals’ series and wins the championship in A1 women's water polo. This title is historic for Haris Pavlidis' "reds", as they become the first team to be crowned champion for the fifth consecutive year and win the historic double, as earlier in the year, they won the Greek Cup. |
| 15/5/2016 | Max Verstappen, at the age of 18 years and 228 days, becomes the youngest F1 winner in the history after winning the Spanish Grand Prix driving a Mercedes |
| 15/5/2011 | FIBA Europe General Assembly concludes in Portugal. Former President George Vassilakopoulos received an award for his contribution to basketball during his two terms of office as President of FIBA Europe and was also named FIBA Europe Honorary President. |
| 15/5/2011 | Samuel Wanjiru, the Kenyan long distance runner who broke the world record in the half marathon at the age of 18, commits suicide by falling off the balcony in his home in Nyahururu at the age of 25 |
| 15/5/2004 | Arsenal set a record when they finish their title-winning 2003–04 season unbeaten, being the first team to achieve that since the foundation of the Premier League and the second in the history of english football after Preston North End (who played only 22 matches) in 1888–89. Arsenal played 38 matches, gathering 90 points, 11 more than Chelsea who finished second, with 26 wins and 12 draws, having scored 73 goals and conceded only 26 |
| 15/5/2004 | After 9.5 hours of continuous climbing,tThe "Greek National Everest Expedition 2004 " stands on the top of Everest at 8.848 meters raising the Greek flag as well as the flag of the Olympic Games |
| 15/5/2002 | Real Madrid (featuring great players like Zidane, Raul, Figo and Roberto Carlos) defeat Leverkusen 2-1 in the Champions League final at Glasgow's Hampden Park, in front of 50.000 spectators. It is the 3d Champions League final they play and win |
| 15/5/1993 | Aris Salonica sign Ricci Thews for only one game, the Greek Cup final against Panathinaikos (with Nikos Galis in their roster). Panathinaikos will win by 96-89 in Athens |
| 15/5/1983 | Greece defeat Hungary 3-2 (Anastopoulos, Kostikos, Papaioannou) in Budapest. Coached by Christos Archontidis Greece performs much better than expected (vs England 0-0 at Wembley and 0-1 vs Denmark in Copenhagen) |
| 15/5/1970 | Giorgos Sideris signs a contract with Belgian Antwerp for the huge amount of 30.000 greek drachmas per month and Olympiacos collects 1.5 million to allow the transfer |
| 15/5/1963 | Tottenham Hotspur become the first english team to win a european trophy (European Cup Winners Cup) by overcoming Atletico Madrid 5-1 in Rotterdam |
| 15/5/1962 | The first baseball ground, the Union Grounds, opens in Brooklyn, New York |
| 15/5/1949 | In their first official match, the Greek basketball team beats Holland with 46-28, in Cairo, during the 6th European Championship. Fedon Mattheou plays with the greek team, scoring 8 points, and the characteristic of the games is that they are played in an open court in Ilioupoli and when the wind blows the court is covered by the sessert sand. This match is the fifth game for Greece, the first four, however, were friendly matches starting with that of 25/6/1936. Mattheou will complete 44 caps and score 539 points |
| 15/5/1935 | First Tour of Spain is concluded. 29 cyclists (out of the total 50) finish after covering 3.425km. Gustave Dellor from Belgium is the winner |
| 15/5/1932 | Panathinaikos suffer the heaviest loss in the Greek Football Championship beaten by Aris 7-0 in Salonica. They will pay back, 41 years after, on 11/2/1973, with 7-1 at the Alexandra Stadium |
| 15/5/1844 | Stuart Perry from New York patents diesel engine |
