Rory McIlroy's last-minute, last-ditch effort to right his game in time for golf's first major of the year at The Masters next week has taken a trip to a usually out-of-the-way spot on the PGA Tour.

McIlroy and three other highly-ranked players start play in the Valero Texas Open on Thursday at TPC San Antonio.

Big-name players don't often seek the Greg Norman-designed Oaks Course at TPC to sharpen their games.

Yet McIlroy's play since he won the PGA Championship in August has dropped him a spot, from 1 to 2, while Tiger Woods went back to the top.