The US PGA Championship has been moved from August to May as part of a revamp which will see the PGA Tour season end before the start of the National Football League campaign.
Meanwhile, The Players Championship, which once occupied the month of May, will be played March 11-17, 2019. The FedEx Cup playoffs will end a month earlier and be condensed from four events to three, with the first tournament - the Northern Trust - rotating between NY and Boston.
Two new tournaments will be part of the new season, back-to back events to be played in Detroit and Minneapolis in late June and early July.
Houston and Greenbrier are to return to the fall portion of the schedule in 2019. So is the Greenbrier tournament, which will now see the Minnesota event take its spot on the schedule.
The World Golf Championships consistently attract the most elite and global fields of the year, with 40-50 of the top 50 players in the Official World Golf Ranking teeing it up in the series of four annual events. The BMW Championship will be held at Chicago's Medinah No. 3 in 2019 followed by the Tour Championship at East Lake in Atlanta.
The PGA TOUR has held a tournament in Memphis every year since 1958 with Colonial Country Club playing host until the event moved permanently to TPC Southwind in 1989.
"We are extremely pleased with the way the schedule has come together, particularly with the number of changes that were involved and the strength of the partnerships required to achieve this new look", Monahan said in a statement.
"And by concluding at the end of August, the FedEx Cup playoffs no longer have the challenge of sharing the stage with college and professional football". "Memphis has been supporting PGA TOUR golf since 1958, and this elevated WGC platform will be monumental for our city".
The WGC-FedEx St. Jude Invitational will be one of four World Golf Championships events on the 2018-19 PGA TOUR schedule sanctioned and organized by the International Federation of PGA Tours.
The WGC-Mexico Championship moves up a week following Genesis and precedes the Honda Classic and Arnold Palmer Invitational.
Valspar is followed by the WGC-Dell Match Play Championship and the Valero Texas Open, which precedes the Masters.
After the RBC Heritage and Zurich Classic of New Orleans comes the Wells Fargo Championship.
Scheduled for May 13-19, 2019, at Bethpage State Park's Black Course (above), the PGA Championship will be the second major played in the 2019 tournament schedule, five weeks after the Masters Tournament and five weeks before the U.S. Open.