SANTIAGO, Chile (Interstat) — CD O’Higgins delivered a stunning opening-day upset, dismantling Union Espanola 4-2 on Sunday in Chilean Primera División action at Estadio Santa Laura-Universidad SEK.

The visiting Rancagua squad defied pregame projections that heavily favored the hosts, turning a highly anticipated contest into a commanding display. Statistical analysis from Interstat had given Union Espanola a 68.3 percent probability of victory, with its game simulator predicting a low-scoring 1-1 draw. Instead, O’Higgins erupted for four goals to launch its league campaign with a decisive victory.

The tone was set early by O’Higgins midfielder Gonzalo Castellani, who opened the scoring in the 14th minute. Castellani, who would prove to be the game’s most influential player, initiated the attack that led to a second goal just 11 minutes later. His through ball found substitute Martín Sarrafiore, who doubled the visitors’ advantage in the 25th minute.

Union Espanola struggled to find a response in the first half, and the match tilted further in O’Higgins’ favor just before the break. In the second minute of first-half stoppage time, O’Higgins was awarded a penalty kick. Substitute Maximiliano Romero stepped up and converted the spot-kick in the 49th minute, sending his team into halftime with a commanding 3-0 lead.

The second half saw O’Higgins continue its control. In the 83rd minute, midfielder Bruno Jáuregui put the result beyond any doubt, scoring his team’s fourth goal to extend the lead to 4-0.

Union Espanola managed to find a consolation pair in a frantic, card-filled finale. Deep into second-half stoppage time, substitute Juan Leiva got the home side on the board with a goal in the 92nd minute. Just five minutes later, another substitute, Francisco González, scored to bring the final margin to 4-2.

The match was a physical and ill-tempered affair, reflected in a flurry of disciplinary actions from the officiating crew. A total of eight yellow cards were issued throughout the contest. The bookings began early with O’Higgins’ Gabriel Pinto cautioned in the 3rd minute and continued at a steady pace, culminating in a double-booking for Ignacio Jeraldino and Cristian Morales in the 77th minute and a final caution for Omar Carabalí in the 85th.

The victory immediately puts CD O’Higgins in a positive position in the Primera División table, beginning its season with a win and no losses. For Union Espanola, the heavy defeat at home marks a disappointing start to its league campaign, beginning the season with a loss and no wins. The records for both teams across all competitions mirror their new league standings.

The performance of O’Higgins was defined by significant contributions from across the roster, particularly from its substitutes. Beyond Castellani’s goal and assist, the team saw goals from Sarrafiore, Romero, and Jáuregui, while Leiva and González provided the late responses for the hosts. The assist chart was crowded, with José Movillo, Luis Pavez Muñoz, Omar Carabalí, Ignacio Jeraldino, Gabriel Pinto, Gabriel Norambuena, and Cristian Morales each recording one.