Mauricio Pochettino was left frustrated as Saints drew 0-0 with Aston Villa.
The Saints boss admitted his side were wasteful in front of goal at Villa Park which meant they failed to win a game they dominated for long spells.
He was also frustrated that referee Lee Mason failed to award a penalty when Nathaniel Clyne’s cross appeared to be blocked by the arm of Ryan Bertrand.
He said: “I think we deserved to win.
“We did everything right, we did everything well, except actually score.
“I am very happy with the team’s performance but I’m a little bit sad because we created many chances but were a little bit wasteful as well.”
Pochettino added: “It was a clear penalty.
“You all probably had a better view from the TV but from my point of view it was a clear penalty.
“The linesman as well was quite close. It’s unexplainable to me why that penalty was not given.
“We feel hard done by because in the last few games we have had decisions that have not gone our way and if those decisions had gone our way as they should have then we would have more points right now.
“The players do not deserve the calls that have not been given because they should have been given and we would be higher in the table if those decisions had gone our way.”