 In week 7 against the Jacksonville Jaguars, Mercilus forced his first fumble of the season on Blake Bortles which was recovered by teammate Jadeveon Clowney.Later in the game, Mercilus recorded his first sack of the season on Cody Kessler during the 20–7 win.In week 12 against the Tennessee Titans, Mercilus recorded a season high 5 tackles and sacked Marcus Mariota 1.5 times during the 34–17 win.