Watch Online Free on Watchseries. The middle entry in this year's three TripleMania shows, following April's TripleMania XXXI: Monterrey, and ahead of August's TripleMania XXXI: Mexico City, the show is set to take place in Tijuana's Estadio Chevron, formerly known as Tijuana National Stadium. It will be headlined by AAA Mega Champion El Hijo Del Vikingo defending his title against former champion Kenny Omega.