Chilean referee Piero Maza gestures during the Copa Sudamericana quarter-final first leg football match between Argentina's Boca Juniors and Brazil's Sao Paulo at La Bombonera stadium in Buenos Aires on September 8, 2026. (Photo by JUAN MABROMATA / AFP via Getty Images)

Sao Paulo's Argentine forward #9 Jonathan Calleri (L) and Boca Juniors' defender #42 Facundo Herrera fight for the ball during the Copa Sudamericana quarter-final first leg football match between Argentina's Boca Juniors and Brazil's Sao Paulo at La Bombonera stadium in Buenos Aires on September 8, 2026. (Photo by JUAN MABROMATA / AFP via Getty Images)

Sao Paulo's midfielder #29 Pablo Maia (C) and Boca Juniors' Uruguayan defender #17 Leandro Lozano fight for the ball during the Copa Sudamericana quarter-final first leg football match between Argentina's Boca Juniors and Brazil's Sao Paulo at La Bombonera stadium in Buenos Aires on September 8, 2026. (Photo by JUAN MABROMATA / AFP via Getty Images)

Sao Paulo players pose for a team photo ahead of the Copa Sudamericana quarter-final first leg football match between Argentina's Boca Juniors and Brazil's Sao Paulo at La Bombonera stadium in Buenos Aires on September 8, 2026. (Photo by JUAN MABROMATA / AFP via Getty Images)

NEW YORK, NEW YORK - SEPTEMBER 08: Emma Navarro of the United States looks on against Jessica Pegula of the United States during their Women's Singles Quarterfinal match on Day Ten of the 2026 US Open at USTA Billie Jean King National Tennis Center on September 08, 2026 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Matthew Stockman/Getty Images)

NEW YORK, NEW YORK - SEPTEMBER 08: Emma Navarro of the United States returns a shot against Jessica Pegula of the United States during their Women's Singles Quarterfinal match on Day Ten of the 2026 US Open at USTA Billie Jean King National Tennis Center on September 08, 2026 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Matthew Stockman/Getty Images)

NEW YORK, NEW YORK - SEPTEMBER 08: Emma Navarro of the United States returns a shot against Jessica Pegula of the United States during their Women's Singles Quarterfinal match on Day Ten of the 2026 US Open at USTA Billie Jean King National Tennis Center on September 08, 2026 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Matthew Stockman/Getty Images)

Boca Juniors' midfielder #08 Tomas Belmonte (front) and Sao Paulo's forward #10 Luciano fight for the ball during the Copa Sudamericana quarter-final first leg football match between Argentina's Boca Juniors and Brazil's Sao Paulo at La Bombonera stadium in Buenos Aires on September 8, 2026. (Photo by JUAN MABROMATA / AFP via Getty Images)