It was another hard-hitting night at the annual MLB Home Run Derby that took place at T-Mobile Park in Seattle on Monday. In the end, one homer hitter set himself apart from the eight-player field: Vladimir Guerrero Jr. of the Toronto Blue Jays. Guerrero, seeded sixth, defeated fifth-seeded Randy Arozarena of the Tampa Bay Rays 25-23 in the final matchup of the three-round tournament to claim his first derby title. The Athletic@TheAthleticPlayers in history to have 35+ home runs in the #HRDerby : Julio Rodriguez Vladimir Guerrero Jr. Pete Alonso Randy Arozarena @RaysBaseball 12433Players in history to have 35+ home runs in the #HRDerby :💣 Julio Rodriguez💣 Vladimir Guerrero Jr.💣 Pete Alonso💣 Randy Arozarena🎥 @RaysBaseball https://t.co/OHQrF1fHJ6The main winner of the Home Run Derby remains Julio Rodriguez of the hometown Seattle Mariners. Rodriguez was the bracket's seventh-seeded hitter. He did not let that hamper him from setting a new derby record. He smacked 41 homers in his first-round matchup against second-seeded New York Mets first baseman Pete Alonso. Alonso is a two-time winner of the derby, but he was easily out-paced by Rodriguez 41-21 in the opening round. The previous record for homers in a round was held by Guerrero. He hit 40 round-trippers in the second round of the 2019 derby in Cleveland. However, Guerrero did get his revenge on Rodriguez for breaking his record by winning the second-round matchup between the sluggers 21-20. The predictable loser of the night was Mookie Betts of the Los Angeles Dodgers. Hollywood's baseball superstar looked lilliputian next to the heavy hitters surrounding him, yet somehow was handed a No. 3 seed for the derby. Betts' night proved to be short, as he lost 26-11 in the first round to Guerrero. MLB Home Run Derby closes out All-Star MondayVladimir Guerrero Jr. #27 of the Toronto Blue Jays reacts during the T-Mobile Home Run Derby at T-Mobile Park on July 10, 2023 in Seattle, Washington.With Blue Jays fans properly pleased, the derby closed out festivities on All-Star Monday, setting the stage for Tuesday's midsummer classic. Guerrero joined his dad, Vladimir Sr., to become the first father/son duo to win the derby. The elder Guerrero, a member of the Los Angeles Angels, won the 2007 derby when MLB held the event in San Francisco.