Steven Davis admitted it was hard to pin down what went wrong during the 0-0 draw at home to AFC Bournemouth.
Despite creating a number of good chances and striking the post through Dušan Tadić, Saints were unable to find the crucial goal and earn all three points at St Mary's.
“It’s hard to put your finger on it,” the captain admitted.
“We didn’t really hit the heights we would have liked to in the second half after a good first half performance – it’s a bit of a frustrating one.
“We thought we were in control for the majority of the first half and had a few good chances, but just weren’t clinical on the day to make the most of them.”
Despite the frustrating result, Saints will have an immediate opportunity to put it right against Crystal Palace on Wednesday night.
They then face West Bromwich Albion just three days later, and Davis knows how important this busy run of fixtures could prove to be.
“We said before the game it would be a big week for us,” he continued.
“The three games give us a good chance to try and get some consistency in our results and performances.
“So we will look back on our performance, analyse it to see what we could have done better and take the positives into Wednesday.”