BUENOS AIRES, ARGENTINA - NOVEMBER 11: Smoke flares are seen as players walk onto the field before the first leg match between Boca Juniors and River Plate as part of the Finals of Copa CONMEBOL Libertadores 2018 at Estadio Alberto J. Armando on November 11, 2018 in Buenos Aires, Argentina. The match was due to be played on November 10th and was rescheduled due to heavy storms in Buenos Aires.  (Photo by Adrian Farias/Getty Images)