A massive boxing class in Mexico City on Saturday set a new Guinness World Record. According to Salvador Rodriguez of ESPN Deportes, the event broke the record for the largest boxing category in the world with 14,299 participants. The event took place in Zocalo for 30 minutes and was hosted by 15 current and former Mexican boxers, including Erik “El Terrible” Morales, Andy Ruiz Jr., Oscar Valdez, Jackie Nava, Humberto “Chiquita” González, Miguel Berchelt, Jose. “Pipino” Cuevas, Alfonso Zamora, Jose Luis Bueno, Jose Antonio “Jaguar” Aguirre, Ganigan Lopez, Adrian “Confesor” Hernandez, Mariana Juarez, Ana Maria Torres and Alan David Picasso. Javier Hidalgo Ponce, director of the Mexico City Sports Institute, handed out T-shirts in green, white and red representing the Mexican flag to all participants earlier this month in anticipation of the mass lesson. “It will be a wonderful colorful party because together we will form the Mexican flag with these beautiful jerseys that each of the participants in the Massive Boxing Class will have,” Hidalgo said on June 3 (via Rodriguez). According to WBCBoxing.com, a total of 40,000 participants registered to take part in the course. Due to limited space on site, organizers expected only 15,000 to 20,000 people to attend. “To break the Guinness record, the Massive Class will be continuous, it will not be able to stop,” WBC Boxing wrote. “Participants will only be able to take two 20-second breaks to hydrate during the course.” The previous world record for the largest boxing category belonged to a 2017 event held in the Red Square of Moscow, Russia, with 3,250 participants.