Piraeus derby

The Piraeus derby, is a traditional association football and water polo rivalry between Ethnikos Piraeus and Olympiacos, the 2 teams representing the city of Piraeus, Greece. Ethnikos was founded on November 21, 1923, while Olympiacos was founded on March 10, 1925. The two teams are one of the most successful multi sports clubs in Greece in terms of honours, with Olympiacos being the team with the most titles in the five biggest team sports (football, basketball, water polo, volleyball and handball), while Ethnikos being fifth.

Olympiacos has never been relegated in football and water polo while Ethnikos has four relegations from the first division of Greek football (1990, 1992, 1996, 1999) and 2 relegations in water polo (2009, 2012).

Once a major derby for the power of the Piraeus city, especially pre WWII, but since Olympiacos' dominance in the 90's and afterwards along with the steady decline of Ethnikos, has led to the derby losing importance over the last 25 years in football, however the rivalry still exists in water polo.

Olympiacos traditionally represented the mass and lower classes of the city of Piraeus and its suburbs while Ethnikos, in contrary, represented the upper class of the city of Piraeus and not much of its suburbs.



Football
Since the two clubs were established in the mid-1920s, Ethnikos' traditional local rival has been Olympiacos CFP, one of the two most popular and successful multi-sport clubs in Greece along with Panathinaikos.

While a legitimate rivalry between Ethnikos and Olympiacos still exists in water polo (Ethnikos Piraeus Water Polo Club has won the most Greek water polo championships of any club, while Olympiacos Water Polo Club has won the second-most), that is no longer the case in football.

Ethnikos and Olympiacos F.C. were more or less evenly matched and had great battles for Piraeus supremacy in the 1920s and 1930s, but thereafter Olympiacos became increasingly more powerful and successful and began to pass Ethnikos by.

In 1956, Olympiacos won the championship with Ethnikos finishing second meaning the first and only time in which the top two positions in the league were occupied by Piraeus's teams.

One of Ethnikos's most important wins (if not the most important) is the semifinal win in the 1932-33 Greek Cup when he beat Olympiacos 2–1 in a knockout match.

Ethnikos was relegated in 1990 to the second division, a sad moment for the club who was never relegated since its foundation in 1923. Nevertheless, Olympiacos fans celebrated it.

Along the way, Olympiacos developed a habit for luring Ethnikos' best players, like Greece men's national football team players Philippos Kourantis in the late 1920s, Giannis Chelmis in the late 1930s and Giannis Ioannou in the early 1950s. This habit continued in the later decades with Christos Arvanitis, Tasos Mitropoulos, Stavros Papadopoulos, Thomas Rohrbach.

In 1956–57 Olympiacos was seemingly behind a scandal that robbed Ethnikos of the national championship. Ethnikos was favorite for the title with 4 matches left in the season, and had the derby with Olympiacos next on the schedule; but before the derby arrived Ethnikos was dubiously disqualified from the competition. With Ethnikos out of the way Olympiacos ultimately took the Championship.

In 1973, Ethnikos lost the great Michalis Kritikopoulos to Olympiacos, just a year before Ethnikos mounted its greatest challenge for the national championship in the modern era; many Ethnikos fans feel that if they still had Kritikopoulos, the team would have managed to hold on to 1st place rather than run out of gas in the second half of the 1974–75 season.

Olympiacos ultimately became the dominant football club in Greece, having won the League and Cup more than any other club, and Ethnikos has not been able to seriously compete with them for decades. Ethnikos has not defeated Olympiacos in a league match since the 1985–86 season and has not finished above Olympiacos in the league standings since the 1987–88 season.

In the 1990s, when Olympiacos was experiencing probably the greatest era of its history while Ethnikos was suffering through what was surely its worst, Ethnikos lost some of its fanbase to Olympiacos.

A recent point of contention for Ethnikos fans has to do with Karaiskakis Stadium. Karaiskakis is the traditional home of both Olympiacos and Ethnikos, but only Olympiacos has played there since the stadium was rebuilt for use in the 2004 Summer Olympics.

Water polo
Olympiacos and Ethnikos are the greatest clubs in the history of men's Greece water polo. Since their foundation, the two clubs were among the strongest in Greek water polo. Before the start of WW2, Olympiacos had won four championship in contrast to Ethnikos's two. After WW2, both clubs remained a dominant force along with NO Patras, fighting for the title almost every year. From 1945 to 1952, NOP won three titles, Olympiacos four and Ethnikos one.

In 1953, Ethnikos started a dynasty of almost 40 years claiming 33 championships in 38 years. The Greek cup that started in 1953 was abolished in 1958 due to unprecedented dominance of Ethnikos who had achieved six straight doubles in 1958. Olympiacos had great difficulty in beating rival Ethnikos, let alone winning the championship. Olympiacos managed to beat Ethnikos from 1952 to 1989 only 8 times in 91 matches. From 1952 to 1964 and from 1979 to 1990, Ethnikos was unbeaten against Olympiacos. However, Olympiacos managed to get two titles. One was shared with Ethnikos in 1969 because of a suspended final match and the other one came in 1971 when the “reds” managed to take the crown of Ethnikos off after 18 consecutive championships for the “blues”. Hall of famer Ivo Trumbić was the coach of Olympiacos.

Since 1992, Olympiacos has won all championships except for five seasons (1994, 1997, 1998, 2006, 2012) and has won also the LEN Champions League twice in 2002 and 2018. Ethnikos has managed only two championships (1994, 2006) and two cups (2000, 2005). Ethnikos' s last win against Olympiacos came in 2008.

Football
Olympiacos's biggest win is 5–0 twice (1966, 1968) while Ethnikos's is 4–2 twice (1929, 1939)

Since 1960 and the introduction of A' Ethniki, Olympiakos won 53 times, Ethnikos 4 times and 15 matches ended as a draw.

Last win for Ethnikos is in 1986 in Olympic Stadium (2–0) while Olympiacos's is the last match they played each other in 1999 (0–3 for Olympiacos).

Head to Head in the Greek cup
1 Ethnikos advanced through the away goals rule

Higher finish in the championship

 * In 2010 and 2013 Ethnikos was playing in the second division while in 1939 he did not compete. On the other hand, Olympiacos did not participate in 1926.
 * In 1935 both were disqualified and did not compete.
 * In 1969 both teams were declared champions.
 * Olympiacos finished 47 times higher, Ethnikos 42 (as of 2022–23 season)

List of official matches

 * Red: Olympiacos win
 * Blue: Ethnikos win

Head to Head matches with title on the line (Final matches)
* Match was suspended in favor of Olympiacos

** Olympiacos abandonded the game after 1 min 25 sec since the start of it due to protest for the exclusion of its players after serious incidents occuring between Olympiacos and Ethnikos players.

The Piraeus derby in European competition
In 2021, Olympiacos and Ethnikos hosted the Group F of LEN Euroleague, Europe's most prestigious club competition for women's waterpolo. All matches were held at the Piraeus National Swimming Pool. Both clubs from Piraeus advanced to the quarterfinals of the competition. The first ever “European” Piraeus derby ended 9–5 in favour of Olympiacos. At the end of the season Olympiacos won the LEN Euroleague and Ethnikos the LEN Trophy. The two city clubs will contest the European Super Cup for the 2022 season. It was the first time two clubs from the same city will compete in any team sport for the European Super Cup trophy in Greek sports history. Olympiacos won the match 11–4.