Kory Sheets started the 2013 CFL season with his career's best performance, rushing for 131 yards. He then beat his career best the following week, July 5, 2013, amassing 133 yards on the ground. The very next week he beat his career best again posting 178 rushing yards, helping the Riders to a 3-0 start to the season. Sheets owns the record of "Most Rushing Yards In The First Three Games Of A Season", being the first player in CFL history to have 442 rushing yards in the first three games of a season, earning "Offensive Player of The Week" in the CFL for Week 3. He ran for 130 yards in Week 4 and 140 yards in game 5, extending his consecutive games with 100 yards to 5 (142.5 average per-game). As result he now has the record for both "Most Rushing Yards In The First Four Games Of A Season" and "Most Rushing Yards In The First Five Games Of A Season". In Week 6, Sheets ran 133 yards against the Stampeders, going six consecutive games with 100+ yards rushing. Sheets' 6 game 100 yard rushing streak came to an end on August 17, 2013 (Week 8); rushing for 73 yards. However, the next week, on August 24 against the Edmonton Eskimos, Sheets ran for 139 yards and 2 touchdowns and was named Offensive Player of The Week. Following the Roughriders game on October 19, Sheets was named the Offensive Player of the Week for Week 17. He rushed for 148 yards with 25 carries and one touchdown in the 35-14 win over the BC Lions. This game was the ninth 100-yard rushing game by Sheets that season, tying him with George Reed for the Saskatchewan franchise record. Kory Sheets finished the season with 1,598 rushing yards, 215 yards behind Jon Cornish who led the league with 1813 rushing yards.