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 time after an extra-time winner by youth graduate Dani in a 2–1 win against Osasuna. The league finish meant Betis became the first Andalucian team to compete in the UEFA Champions League, and it reached the group stage after disposing of Monaco in the last qualifying round (3–2 on aggregate). Drawn in Group G, and in spite of a 1–0 home win against Chelsea, the club eventually finished third, being "demoted" to the UEFA Cup, where it would be ousted in the round of 16 by defeated Steaua București (0–0 away draw, 0–3 home loss). Betis celebrated their centenary year