Lefty skipped Bay Hill but will go back-to-back in Texas before teeing it up at the Masters. The 43-year-old has had an uneven start to his 2014 PGA Tour season, with a missed cut, withdrawal and no finish better than 16th.
Mickelson hasn’t played the Texas Open since his rookie year in 1992. He tied for 47th that year at Oaks Hills Country Club.
Last year, McIlroy made an 11th-hour decision to add the San Antonio event, which was played the week before the Masters.