Jaycee Horn intercepted two passes that led to touchdowns and South Carolina made a fourth-down stop on the final play for a 30-22 win over visiting No. 15 Auburn on Saturday, the Gamecocks’ first-ever SEC victory over the Tigers.Auburn faced fourth-and-5 from the 12 with nine seconds to go, but quarterback Bo Nix’s scramble came up short as time expired.Horn, who also tipped a pass that led to another interception, stepped in front of a sideline pass from Nix late in the third quarter, returning it 34 yards to the 8. Kevin Harris ran for a touchdown on the next play for a 27-19 lead. South Carolina (2-2, 2-2 SEC) hadn’t defeated Auburn (2-2, 2-2) since 1933 and had been winless in eight conference meetings.Nix, who ran for 69 yards, was intercepted three times, all leading to touchdowns. He finished 24-of-47 passing for 272 yards with one touchdown.South Carolina’s Collin Hill was 15 of 24 for 144 yards, with an interception and a 10-yard score to a leaping Shi Smith that provided a 20-19 lead midway through the third quarter.Auburn true freshman Tank Bigsby rushed 16 times for 111 yards, his second consecutive triple-digit effort. The Tigers held a 481-297 edge in total yards.