Big Changes has taken his game to another level since he was moved to turf, and on Saturday he will seek his second straight stakes win when he starts in the $60,000 Unbridled at Louisiana Downs. The Unbridled, for 3-year-olds and up over 1 1/16 miles on grass, is one of six stakes supporting the $200,000 Super Derby. It also serves as the third leg of an all-stakes pick four that runs on races 8-11 and has a minimum guaranteed pool of $75,000. First post is noon Central. Big Changes has won two of five starts on the grass, moving to the surface for the first time in May 2016 and promptly winning an optional $62,500 claiming race at Churchill Downs. He reached a new Beyer Speed Figure high two starts ago, earning a 94 when third in an $80,000 optional-claiming race on the grass June 15 at Churchill. Big Changes was beaten a neck by Queen’s Plate winner Sir Dudley Digges, then won the $50,000 John Henry over the turf at Louisiana Downs on Aug. 5. “He’s a better horse on the grass,” said Brad Cox, who trains Big Changes for Steve Landers. “His numbers say so. I think so. We tried to put him back on the dirt this winter and he didn’t act like he wanted any part of it. He was a little flat in that race and just seems to like the grass a little bit better than the dirt.” Diego Saenz has the mount on Big Changes, who will break from post 2 in the field of nine. Big Changes is one of seven starters Cox has in five of the stakes Saturday. Cox also has High Noon Rider, a stakes winner at 3, in the Unbridled. Cox will also be represented by two starters in the $60,000 River Cities, a 1 1/16 miles turf race for fillies and mares. He saddles Sister Blues, who could go favored as she seeks her fourth straight win, and Quinta Verde, who appears to be sitting on a peak effort. Sister Blues has built her streak over three different distances, beginning at 1 3/8 miles in a first-level allowance May 29 at Churchill. She then won an optional $62,500 claiming race over 1 1/8 miles June 28 at Churchill before winning the $50,000 Opelousas at a mile on turf Aug. 5 at Louisiana Downs. “I don’t think the distance will be a problem,” Cox said. Sister Blues will break from the rail and could set the pace under Colby Hernandez. “She’s in good form right now, came out of her last race in great shape,” Cox said. “She had some really nice breezes since the last race at Louisiana Downs. I think she’s set up to run a big race.” Cox is hopeful Quinta Verde will move forward off her last start, which was her first out in four months. The race has already produced three next-out winners. Saenz has the mount from post 4. Cox trainee Lady O’Toole will make her two-turn and turf debut in the $60,000 Happy Ticket, which is for 2-year-old fillies at a mile on the grass. She has won two of three starts and is coming off a victory in a conditioned allowance sprint July 26 at Indiana. “Pedigree, conformation, she has a lot of positives that I personally think point for two turns and turf,” Cox said. “She’s very classy. Done everything right.” Colby Hernandez has the mount from post 2 in the field of 12. The $60,000 Sunday Silence for 2-year-olds at a mile on turf drew nine, including leading contenders High Providence and Sitting Bull, both of whom have won at two turns on the grass. ◗ Wings Locked Up returns to turf, a surface over which he is a four-time winner, for the $50,000 Need for Speed. The about-five-furlong turf race was transferred to Louisiana Downs from Evangeline. Wings Locked Up was fourth last out in the $100,000 Iowa Sprint Handicap. ◗ Boom Bam Bing seeks her first stakes win in the $50,000 Tellike, for fillies and mares at about five furlongs on the grass. She enters off a runner-up finish in a Lone Star Park allowance July 29. The chief threats are Justa Lady and Look Into My Eyes.