concern for other reasons, with Rex Hoggard of the Golf Channel remarking "Since 2007, when the Tour uprooted the Match Play from La Costa for the Tucson highlands, the galleries have been thin, the golf courses have been tolerated and the Sundays have been largely undistinguished". In 2015 the tournament underwent a revamp, moving to TPC Harding Park, a municipal course owned by the city and county of San Francisco, and became sponsored by Cadillac (who also sponsored the WGC Championship). The tournament moved from February to April 27 – May 3, the week prior to The Players Championship. The structure was changed so the field was split into 16 four-player groups played on Wednesday, Thursday and Friday, with the player with the best record advancing. The four knockout rounds are then split over Saturday and Sunday. The format ensured that spectators could guarantee to see the entire field on the first three days, and some coverage would occur in primetime in the East Coast of the United States. After one year in California, the tournament moved to March with a new long term home and sponsor, the Austin Country Club in Texas, and Dell (which is headquartered in greater Austin area). The following year, as a result of the title sponsor's involvement in a merger the tournament became known as the WGC-Dell Technologies Match Play. In 2015, Jason Day became the third player to win multiple WGC Match Plays, and in 2016 Dustin Johnson won to become the only player to have won all four World Golf Championships. In early 2019, a deal was signed for Dell Technologies to remain the sponsor, and Austin Country Club the host, until at least 2023. Structure Field The tournament has a field of 64 players filled based upon the following criteria: Top 64 players from the Official World Golf Ranking (ten days prior to the event). If anyone within the top 64 is not available the field is filled by the next highest ranked player in the Official World Golf Ranking. Format The tournament is split into two phases: The players are split into 16 groups of four players (each group has a player seeded 1–16, 17–32, 33–48, 49–64). Each group plays in a round-robin format over Wednesday, Thursday, and Friday. One point is awarded for a win, and one-half point for a tie, with only the group winner qualifying to the