Real Betis (31%). The first match between the two clubs took place on 8 February 1915, with Sevilla winning 4–3. The match was not completed, as high tensions led an aggressive crowd to invade the pitch, forcing the referee to abandon the match. In 1916, the first "Copa Andalucía" was held, this being the first official derby of the Sevilla area. Of the 17 runnings of the cup, Sevilla were victorious 14 times, to Betis' one sole conquest; this included a 22–0 routing after the latter sent their youth team, in 1918. The first time the teams met in league, in "Segunda",
Real Betis white Kit to honor their most famous manager Paddy O'Connell, who was from Ireland. He led Betis to the division title in 1934 by a single point over Real Madrid. During the Spanish Second Republic (1931–1939), royal patronage of all organisations was nullified, and thus the club was known as Betis Balompié until after the Spanish Civil War when it would revert to the full name. The club reached the Copa del Presidente de la República final for the first time on 21 June 1931, when it lost 3–1 to Athletic Bilbao in Madrid. Betis marked their 25th anniversary year