Tuivasa-Sheck was playing his second game back since a serious knee injury ended his 2016 season after just seven games.
Awarded the captaincy two weeks ago, Tuivasa-Sheck is finding his feet in the unfamiliar role.
"I'm feeling comfortable, especially with the boys around me - they're helping me, they're supporting me," he said.
"I haven't done so much stuff as a captain, I've just been one of the boys yelling out the calls and reminding them of their jobs."