The Crusaders will welcome back the services of All Blacks flanker Matt Todd when they take on the Hurricanes on Saturday night.
The vice-captain has made a hasty recovery from the thumb injury in round one which saw him miss the match against the Stormers last weekend, and will reclaim his No. 7 jersey at Westpac Stadium.
"The surgeon was happy enough for him - if he could function well, it wouldn't make it any worse," Robertson told media.
In the other forwards adjustment, Heiden Bidwell-Curtis will start on the opposite side of the scrum as Todd.
Mitchell Hunt steps into first-five for the injured Richie Mo'unga, with Mike Delaney setpping in as back-up from the bench.
"He's really calm, really clear, got a good manner and deals with pressure," Roberston said of Hunt.
Kick off is scheduled for 7:35pm on Saturday.
Crusaders: David Havili, Seta Tamanivalu, Jack Goodhue, Ryan Crotty, George Bridge, Mitch Hunt, Bryn Hall, Jordan Taufua, Matt Todd, Heiden Bedwell-Curtis, Sam Whitelock (c), Scott Barrett, Michael Alaalatoa, Codie Taylor, Wyatt Crockett.
Reserves: Ben Funnell, Chris King, Oliver Jager, Luke Romano, Billy Harmon, Mitch Drummond, Mike Delany, Manasa Mataele.