Nigel Pearson described coming away from Hull without any points as a "travesty" after his side were punished with two hugely controversial penalty decisions in both boxes.
Andi Weimann wasted little time opening his account for the season when he fired the Robins ahead after 30 minutes after latching onto Zak Vyner's header back across goal from Kal Naismith's excellent free-kick.
City were disciplined and organised in the first half but sat back in the second as Hull looked to force their way back into the contest without particularly troubling Dan Bentley between the sticks.
