11 golf players have filed a lawsuit against the tour in order to challenge their suspensions.
All of the tour's members who have signed up to the LIV series have been suspended by the tour.
The anti-trust lawsuit was brought against DeChambeau.
They argue that the tour is trying to hurt their careers.
The lawsuit states that the Tour's conduct serves no purpose other than to cause harm to players.
The purpose of this action is to strike down the PGA Tour's anti-competitive rules and practices that prevent these independent-contractor golfers from playing when and where they want.
Jay Monahan said in a letter that the organisation wouldn't back down.
The suspended players are now working for the Saudi Golf League and want to return to the tour.
It's an attempt to use the Tour platform to promote themselves and to free ride on your efforts.
To allow re-entries compromises the Tour and the competition, to the detriment of our organization, our players, our partners and our fans.
The lawsuit they have filed expects us to believe the opposite and we intend to make our case clear and vigorous.
The players who joined the series in June were not allowed to play in the US Open or the Open Championship.
Among those suspended were six-time major winner Phil Mickelson and others.
The European-basedDP World Tour suspended Poulter after they followed the lead of thePGA Tour.
16 players threatened legal action if the bans were upheld and Ian Poulter was able to play in the Scottish Open after his ban was lifted.
The PGA Tour is being sued by a group of people, including Carlos Ortiz, Peter Uihlein, Pat Perez, Abraham Ancer, Talor Gooch, Hudson Swafford and Matt Jones.
The FedEx Cup play-offs begin next week and Gooch, Swafford and Jones are requesting temporary relief to be able to compete.