Though there is no opening at third base in Atlanta at the moment, former DeSoto Central High star Austin Riley continues to build his resume, prepping for an opportunity that can’t be far off. Riley, 21, one of the Braves’ highest-rated prospects, is batting .283 with 11 homers and 46 RBIs at Triple-A Gwinnett. He extended his hitting streak to nine games on Thursday with a 3-for-5, five-RBI effort that included his fourth homer in his last eight games. He has 18 bombs this season, including six he hit at the start of the year in Double-A Mississippi. Riley’s progress this season, his fourth in pro ball, was stalled by a knee injury in early June. It took a while, but he seems fully recovered now. “I think the biggest thing was trusting that my leg was 100 percent … and being able to put all my weight on it pressure-wise, whether it’s a swing or defense,” Riley said in an milb.com story. “Just being able to trust that it’s 100 percent.” Riley isn’t on the Braves’ 40-man roster – and M-Braves alum Johan Camargo is handling third base very well — so a September call-up isn’t a foregone conclusion. But Riley stands ready. “I think he’s more than capable of helping that club win right now,” Gwinnett manager Damon Berryhill told the Gwinnett Daily Post. P.S. Former M-Braves pitcher John Gant homered for St. Louis — while also throwing 5 2/3 shutout innings to notch a win – and is now 2-for-36 in his MLB career, both hits homers. His other bomb came earlier this month and was the first since high school for the eight-year pro.