In their final week before the schedule begins, the Tigers showcased a host of riders, suggesting how open spots in the starting lineups might be filled. Losing former starters to graduation is a regular challenge, but for teams at the top of their sport – like Auburn Equestrian – it’s also a chance for future stars to take their turn in the college spotlight. Only two starting spots in Auburn’s Fences and Flat lineups aren’t filled with a returning All-SEC or All-American, so there’s no pressure for Head Coach Greg Williams to rebuild the Jumping Seat roster this year. Even…