In the main event, former UFC heavyweight champion Junior dos Santos will square off against fellow UFC veteran Yorgan De Castro in a heavyweight contest. Dos Santos will be competing for the first time since his departure from the UFC in early 2021. De Castro won his Eagle FC debut in January with a first-round guillotine over Shaun Asher in 64 seconds.
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The PFL 1 mixed martial arts event for the 2018 season of the Professional Fighters League was held on June 7, 2018, at the Hulu Theatre at Madison Square Garden in New York City, New York, United States.
The PFL 4 mixed martial arts event for the 2018 season of the Professional Fighters League was held on July 19, 2018, at the Nassau Coliseum in Long Islandy, New York, United States.
