Stacy Lewis gave her vocal gallery something to cheer about at the LPGA NW Arkansas Championship. Lewis made four straight birdies and eight overall to shoot a 6-under 65 on Saturday and join a group of four players atop the leaderboard at 10 under after the second round at Pinnacle Country Club. Lewis, the world's No. 2 player, earned an unofficial win at the rain-shortened event as an amateur in 2007. She is the local favorite this week, having played collegiately at Arkansas. Chie Arimura and Beatriz Recari both equaled Lewis' 65 and are tied entering the final round with So Yeon Ryu. First-round leader Mika Miyazato shot a 70 and is three shots back, and top-ranked Inbee Park leads a group of three players two shots back at 8 under. Lewis was as low as 11 under after 17 holes, thanks in large part to needing only 27 putts for her round - a number that included several near misses and a three-putt on her final hole. Still, Saturday's effort put the formerly top-ranked Lewis in Sunday's final pairing with Recari and well within reach of a championship. Arimura, the rookie from China, also needed only 27 putts on Saturday in shooting a bogey-free 65. She tied for the lead with birdies on her final two holes. Ryu birdied the par-5 7th hole - her 16th hole of the round - to reach 10 under. Recari also posted a bogey-free round, birdieing four of her first seven holes before making the last of her six birdies on the par-5 14th. The Spanish golfer already has one win this year, the Kia Classic in March. Kim, Pornanong Phatlum and Ji Young Oh are each at 8 under along with Park, while amateur Lydia Ko and Miyazato are at 7 under. Juli Inkster followed an opening 71 with a 6-under 65 on Saturday.