Four-time PGA champ Rory McIlroy says green reading books should be banned and eliminated

(0:30)SAN DIEGO -- The PGA Tour is close to banning green-reading books before next season, but four-time major champion Rory McIlroy isn't sure that's enough to even the playing field on the greens.Speaking the day before the start of the 121st U.S. Open on the South Course at Torrey Pines, McIlroy wouldn't confirm whether the PGA Tour Player Advisory Council voted to outlaw the books, which provide golfers and their caddies detailed information about course-green slopes. The full board of the PGA Tour might vote on the recommendation as early as next week at the Travelers Championship in Cromwell, Connecticut.The ban would reportedly take effect at the start of the 2021-22 season, which is slated to begin a few weeks after the Tour Championship in Atlanta in September.Currently, the Masters is the only tournament that doesn't permit their use.Defending U.S. Open champion Bryson DeChambeau is among the players who are proponents of using the books."It's not that it's an advantage, really, it's just taking away a skill that takes time and practice to be mastered," McIlroy said.