World Series of Fighting 20: Branch vs. McElligott was a mixed martial arts event held April 10, 2015 (2015-04-10) in Mashantucket, Connecticut, United States.

The main event was originally scheduled to feature the second semifinal fight of the WSOF Light Heavyweight Championship tournament between Matt Hamill and Vinny Magalhães.

[2] The main event was then changed to a fight between WSOF Middleweight Champion David Branch and Ronny Markes for the second semifinal fight of the WSOF Light Heavyweight Championship tournament.

[3] However, on the day of the weigh-in, Markes was forced out of the bout due to dehydration and was replaced by promotional newcomer Jesse McElligott.

[4] McElligott's original opponent, Steve Skrzat, was removed from the card entirely and paid his show and win money.