(FILES) Arsenal's Spanish manager Mikel Arteta arrives ahead of kick-off in the UEFA Champions League, last 16 second leg football match between Arsenal and Bayer Leverkusen at the Emirates Stadium in north London on March 17, 2026. Has everything in football already been invented? Last few years, two Spanish coachesPep Guardiola and Luis Enriquehave revolutionized the world's most popular sport with defensive and offensive strategies inspired by other sports, such as rugby or water polo. Set-piece goals, particularly from corners, became a major talking point thanks to the Arsenal side managed by Spanish coach Mikel Arteta. (Photo by Glyn KIRK / AFP via Getty Images)