Since first joining the PGA Tour in 2005 for the first time following a standout Nationwide Tour season the previous year, Walker has struggled with injury and form until he began to find his feet at the higher level in 2010.
Things got increasingly better for him but it took until late in 2013 and more than 180 PGA Tour starts before his first victory eventuated when winning the Frys.Com event in California in October.
It has taken only five more starts for him to win again and the understated but always talented Texas based Walker, who moves to 32nd in the world as a result of his win, appears likely to add even more to that tally.
Walker edged clear of a jam packed final day leader-board, one that saw five players tied for the lead after nine holes had been completed by the final group on day four.
Walker won by one shot over 54 hole leader Chris Kirk and by two over veteran Jerry Kelly.
Harris English was 4th and Marc Leishman recovered from a costly third round to record a final round of 67 to finish alone in 5th position. Leishman birdied four of his last five holes to assure himself of a large cheque in his first competitive outing since mid November.
For Leishman it was his best PGA Tour finish since his 4th place finish at Augusta National nine months ago.
Adam Scott, without the services of regular caddie, Steve Williams who is back in New Zealand racing cars this week, made a big move during the final round to get within one of the lead but he had left himself too much work to do and eventually finished tied for 8th.
It was yet another solid week for the world number two who now takes a break until the last week of February when he will play the Honda Classic. That therefore means Scott will not play the Accenture Match Play Championship.
Robert Allenby produced a much better showing to finish 20th recovering from a slow start to his final round to finish with a round of 70.
The PGA Tour now heads to the West Coast, beginning with the Humana Challenge in la Quinta this Thursday.