Love, who won for the 14th time in his career on Sunday, supplanted Colin Montgomerie, who dropped to seventh. The Scotsman has yet to tee it up in 2001.
Tiger Woods remained way ahead of second-ranked Ernie Els despite his recent slump. Woods has failed to notch a victory in six starts, his longest stretch without a win since he finished out of the top spot seven straight times in 1999.
That year, Woods captured the Buick Invitational in February and didn't win again until the Memorial Tournament in June. He then went on to win 15 of his next 26 starts, including six in a row from late '99 through early 2000.
Phil Mickelson, who tied for third on Sunday, held on to third place. He will look to defend his title at this week's Buick Invitational.
David Duval missed the cut at Pebble Beach but remained in fourth place, followed by Lee Westwood, Love and Montgomerie. Vijay Singh, the lone runner-up this past weekend, stayed in the eighth spot.
Northern Ireland's Darren Clarke climbed three slots to ninth place on the strength of his victory in the Southern Africa Tour's Dimension Data Pro-Am on Sunday. Hal Sutton dropped one spot to 10th, followed by Jim Furyk in 11th.
Tom Lehman, who also failed to qualify for weekend play at Pebble, fell two spots to 12th place, while Nick Price and Jesper Parnevik remained in 13th and 14th, respectively.
Michael Campbell of New Zealand, fresh off his successful title defense at the Heineken Classic, moved up one position to 15th. Dropping back to 16th was Sergio Garcia, followed by Stewart Cink in 17th.
Denmark's Thomas Bjorn, Canadian Mike Weir and Loren Roberts rounded out the top-20.
Glen Day, whose final-round 65 saw him vault from 35th place into a tie for sixth at the Pebble Beach event Sunday, also made a big move on the World Golf Rankings top-100. Day jumped nine spots from the 94th to 85th.
Although he tied Mickelson for third on Sunday, Olin Browne could not crack the top-100. He moved up 19 spots to 101st.
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