Even though he had just polished off a second-round 63 that followed a 7-under 64 in the first round, Roberto Castro was quick to point out that, "It's always hard to back up a low number with another low number." You wouldn't know that by watching Castro. The Georgia Tech graduate, who earned a spot in the Preferred Health Systems Wichita Open this week after having a top-25 finish at last week's Cox Classic, played his second consecutive bogey-free round at Crestview Country Club and enters the third round with a two-shot lead over Steven Bowditch and Scott Gutschewski. Dan Buchner and first-round leader Matt Davidson are tied for fourth. In limited Nationwide Tour action this season, Castro seems to play better each week. He tied for 54th in April at the Fresh Express Classic at TPC Stonebrae in California's Bay Area and tied for 19th last week in Omaha after getting into that tournament as a Monday qualifier. In between, he's been toiling on the eGolf Professional Tour, where he won the Savannah Quarters Classic in Georgia in February. Castro is third on the eGolf Tour money list, with a little more than $64,000 in earnings. In three seasons on that Tour, Castro has won four tournaments, while also squeezing in Nationwide Tour events when he qualified. In 2009, Castro played in five Nationwide Tour events, with a tie for sixth at the Chattanooga Classic his best-career performance, again after he Monday qualified. "The nice, cool thing about the Nationwide Tour is Mondaying into tournaments," said Castro, making up words as he went. "But it's not easy to do." Read more: http://www.pgatour.com/2010/tournaments/h023/08/06/rd2-wrapup/