Danny Lennon cut a frustrated figure after seeing his St Mirren side lose 3-1 at Kilmarnock.
Paul McGowan’s 83rd minute goal only proved to be a consolation after Cillian Sheridan, James Fowler and James Dayton had scored for the hosts.
The visitors created several chances in the first-half but went into the break 1-0 behind.
And Lennon said: "We started very well and I really enjoyed the first-half performance with the exception of the missed opportunities we created.
"The penalty-box incidents were the main difference between the two sides and all credit to Kilmarnock, they took their chances.
"We were punished by defensive errors and by the time we got the goal back the game was beyond us.
"I'm really grateful we have a cup tie against Hamilton on Tuesday and the opportunity to bounce back from our disappointment."
- Killie boss: St Mirren match was ‘a fantastic advert’ for Scottish football
- Kilmarnock 3-1 St Mirren: Second-half brace sends Killie to victory