At the time, there was no goal difference, so they had to go to a tiebreaker, which sparked the very first conflict between both clubs, namely about the choice of the venue, O'Donnell again, and the referee, José Berraondo.

[1] In the replay, Berraondo awarded three penalties in favor of his former team, two of which were saved by Barça's goalkeeper Luis Bru (one of which with his head), but the third was converted by Santiago Bernabéu in the 118th minute to salvage a 6–6 draw, thus forcing another replay, which was also refereed by Berraondo, who again made several questionable decisions, such as giving yet another last-minute penalty, which drove the Barça players to withdraw in protest.

[9] In the return leg, on 2 April 1916 at the O'Donnell field (not yet a stadium), the whites finally achieved their first official victory against Barcelona: 4–1, the courtesy of a hat-trick from Santiago Bernabéu (one from a penalty), while the remaining goals were netted by Petit and Martínez, who thus scored for their respective teams again.

[10][11] At the time, it was not the goal difference that mattered, but the victories, and with which having won their respective home game, they had to go to a tiebreaker, which sparked the very first conflict between both clubs, namely about the choice of the referee, José Berraondo, who had played for Madrid between 1904 and 1909, and who had lost the 1913 UECF cup final to Barcelona.

[12] In the last minute, however, Berraondo then gave his third penalty of the night in favor of Madrid, although at least this one was not discussed (a harsh tackle by Barcelona's captain Santiago Massana), and this time Bernabéu did take advantage of it to salvage a 6–6 draw and forced a new tiebreaker.

[1] During the build-up for the match, it was discovered that Madrid suffered the loss of Belaúnde, the scorer of three goals in the previous match, and that he had been replaced by a certain Zabalo, who Madrid claimed to belong to their second team, but the veracity of this statement was then disputed since Zabalo had played that entire season for Real Unión, which caused Barcelona to protest, but the governing bodies authorized the change.

[13][11] Berraondo then made another questionable decision by giving yet another last-minute penalty with the score tied at 2, but Bru, living up to his fame, saved that one as well, his third overall, and thus forcing extra-time, in which Sotero Aranguren scored twice, although the Barcelona players protested that the Madrid attackers had grabbed Bru in the second goal, but Berraondo once again turned a deaf ear to it.

[1] Feeling that the referee had been extremely biased in favor of the home team over and over again, the captain Massana decided to withdraw in protest, and at his signal, the Barcelona players left the field, although the managers present tried to stop the rebellion and, later, disapproved of the measure.

[1] The chronicles of the time say that the end of the match was strange: the public silently accompanied the departure of both teams but strongly protested Berraondo's performance.