The win vaulted Gore up 230 places to No. 88 in this week's Official World Golf Rankings.
Gore, who shot a 59 on the Nationwide Tour this year, became a fan favorite at the U.S. Open when he played in the final group on Sunday. He played poorly, but the experience allowed him to win three Nationwide Tour titles and earn a 'battlefield promotion' to the PGA Tour.
Tiger Woods remained in first for the 357th week. Vijay Singh, Phil Mickelson, Ernie Els and Retief Goosen round out the top-five as all but the injured Els will participate in this week's Presidents Cup.
Sergio Garcia and Adam Scott held their places from last week in sixth and seventh, but Chris DiMarco and Jim Furyk switched places from the prior week with DiMarco moving to eighth and Furyk dropping to ninth. Kenny Perry came in 10th again this week.
Angel Cabrera, representing the International team for the first time this week, moved up two to 11th. Padraig Harrington stayed at 12, while David Toms, who was hospitalized for a heart problem at the 84 Lumber Classic, fell two to 13th.
Luke Donald came in 14th as Michael Campbell, who won last week's HSBC World Match Play Championship, and Davis Love III switched spots. Campbell came in 15th and the American sank to No. 16.
Darren Clarke and Tim Clark both kept their spots from last week, 17th and 18th, respectively. David Howell jumped two to 19th and Fred Couples fell one to 20th.