Napier City Rovers dominated possession to create many chances but "got done on the counterattacks a little bit" in their loss at the weekend.
The Conroy removals-sponsored Blues went down 2-1 to Wellington United in their Lotto Central League football match at Newtown Park in the capital city on Saturday.
"We are disappointed not to get anything out of the game. I think we got the better of the game so a point would have been at least something because we did enough to win the game," said Robertson after the hosts led 1-0 at halftime from a goal to Jack Henry Sinclair in the 21st minute from some good movement and a decent finish.
"We tried to push bodies forward to win the game and got done on the break but we had a lot of chances so we probably should have been a bit more clinical," said Robertson.
Rovers striker Angus Kilkolly equalised in the 51st minute but Wellington United took the lead from a bench debutant in the 87th minute to seal the match.