On January 10, in the first leg of the English League Cup semi-finals, Chelsea lost 0-1 away to Middlesbrough.
In the 37th minute, Harnett scored in front of the goal and scored the only goal of the game.
Chelsea lineup: 28-Petrovic, 6-Thiago Silva, 2-Disasi, 26-Colwell, 27-Gusteau (90’42-Gilchrist), 25-Caicedo, 23-Gallagher, 8-Enzo (63’19-Broja), 20-Palmer, 7-Sterling, 11-Maduekai (63’10- Mudrick)