Cook was one of the Rabbitohs' best in an otherwise dour Charity Shield, providing the side with an immediate spark from the moment he entered the fray.
To his credit, the team's starting hooker, Cameron McInnes, was more than solid, setting up John Sutton for the game's opening try, and forcing a line dropout with a well-placed grubber.
Cook was full of praise for his 22-year-old teammate, crediting him for Souths' solid start.
"Cam is really good at that," Cook said following his side's 18-14 win over the Dragons.