Rookie Ernst tied for Wells Fargo lead

Rookie Derek Ernst has joined Ryan Moore, Nick Watney and Robert Garrigus in a four-way tie for the lead at the Wells Fargo Championship. They all shot a five-under 67s and are one shot ahead of Boo Weekley, Phil Mickelson and Nicolas Colsaerts.

Rory McIlroy made four straight birdies on Nos. 5-8, but a bogey on No. 9 has him at 3 under.

Ernst only made the tournament field as a fourth alternate. A rookie who played at Nevada-Las Vegas, he had planned on playing a Web.com tournament in Athens, Ga., this week when he got the call to come to Charlotte. He finished in a tie for 47th at last week's Zurich Classic in New Orleans.