John Catlin will replace Graeme McDowell at the 2024 LIV Golf Greenbrier event. McDowell was suspended from LIV Golf for using a nasal decongestant that contained substances banned on the circuit.After failing the series’ anti-doping policy, McDowell was suspended for one match and fined $125,000. Additionally, his results from the LIV Golf Nashville event were disqualified.As players gear up for the upcoming LIV Golf event, it has been announced that John Catlin will take McDowell’s place at the Greenbrier event. Smash GC announced the news on its X (formerly Twitter) account, writing:"Stepping in and stepping up! John Catlin is ready to bring it as he fills in for Graeme McDowell at LIV Golf Greenbrier."Notably, Graeme McDowell admitted to his suspension and released a statement about it on his social media accounts. He wrote:"As a professional golfer, I understand the importance of checking all medications and the option to apply for a Therapeutic Use Exemption (TUE). Unfortunately, I did not take the time to do this due to the over-the-counter nature of this medicine, and deeply regret the oversight. I fully accept the sanctions imposed by LIV."The 2024 LIV Golf Greenbrier event will take place from August 16 to 18 at The Old White at The Greenbrier and Bryson DeChambeau will return to defend his title this week.Who will play at the 2024 LIV Golf Greenbrier? The 2024 LIV Golf Greenbrier will feature a field of 54 golfers competing for the winner's share of the $20 million individual purse. The tournament has a total purse of $25 million, with $5 million allocated for the team event.This week’s field includes Bryson DeChambeau, Brooks Koepka, Phil Mickelson, and other Saudi Circuit players.Here is the field for the 2024 LIV Golf Greenbrier event:Abraham AncerRichard BlandDean BurmesterPaul CaseyJohn CatlinBryson DeChambeauSergio GarciaTalor GoochBranden GraceTyrrell HattonLucas HerbertSam HorsfieldDustin JohnsonMatt JonesMartin KaymerAnthony KimBrooks KoepkaJason KokrakJinichiro KozumaAnirban LahiriDanny LeeMarc LeishmanEugenio Lopez-ChacarraAdrian MeronkPhil MickelsonSebastian MunozKevin NaJoaquin NiemannAndy OgletreeLouis OosthuizenCarlos OrtizMito PereiraPat PerezThomas PietersIan PoulterDavid PuigJon RahmPatrick ReedKalle SamoojaCharl SchwartzelCameron SmithBrendan SteeleHenrik StensonCaleb SurrattHudson SwaffordCameron TringalePeter UihleinHarold VarnerScott VincentKieran VincentBubba WatsonLee WestwoodMatthew WolffNotably, Graeme McDowell will miss this week's LIV Golf Greenbrier event but will return to compete in the Chicago event. He confirmed his presence at the LIV Golf Chicago event in his statement on social media. The 2024 LIV Golf Chicago event will take place at Bolingbrook from September 13 to 15.