Sunderland manager Martin O'Neill admitted his side had got what they deserved after losing 1-0 at home to Middlesbrough in the fourth round of the Capital One Cup.
Scott McDonald scored the winner for Boro in the 39th minute at the Stadium of Light and the Black Cats lacked a cutting edge as they failed to find an equaliser.
"It was an opportunity for us to try and get into the quarter finals of the competition and we didn't play well enough and we didn't deserve to go through," said O'Neill.
"It was really disappointing. We started off brightly in the game but Middlesbrough forced their way into the game and in truth we didn't create enough.
"Eventually we didn't have enough confidence but not at the start of the game and not on the back of a strong draw on Saturday against Stoke.
"I thought it was quite the opposite but if you're not playing well enough that can drain you and you can start playing the wrong options. Collectively we were not good enough to go through and that's very disappointing indeed.
"Tonight there must have been six occasions I can recall where we've had really good position in the penalty area and we've either overrun it or misjudged the next ball through and the move evaporates. That's disheartening.
"I think that is unusual. Usually the teams I have managed have been able to score goals and naturally I'm disappointed but that's my responsibility."
- Capital One Cup: Sunderland 0 - 1 Middlesbrough
- Grant Leadbitter: Middlesbrough Must Capitalise On Recent Strong Form
- Cattermole Signs New Deal
More from Sunderland AFC
- Sunderland's Ahmed Elmohamady Keen On Hull Stay
- Sunderland's N'Diaye Backs Paolo Di Canio's Approach
- Altrincham Striker Joins Sunderland Development Squad
- Sunderland End Of Season Stat Attack: SAFC Had Premier League's Most Accurate Finisher
- Sunderland's Titus Bramble Tweets Goodbye To Club And Teammates
- Sunderland Head Coach Paolo Di Canio Happy With Transfer Team Effort
- Former Sunderland Midfielder Claudio Reyna Named Director Of Football At New York City Football Club
- Transfer Talk: Reported Sunderland Target Mbokani Hoping For Premier League Move
Related tags: Sport
- Newcastle's Steven Taylor Hopes Captain Coloccini Stays
- Newcastle Target Aubameyang Urged To Join Anzhi Makhachkala
- Ryan Donaldson Leaves Gateshead For Cambridge United
- RFU Championship Playoff Final First Leg: Bedford Blues 9-18 Newcastle Falcons
- Is Alan Pardew Still The Right Man For The Job At Newcastle United? Opinion Poll
- LV= County Championship Durham CCC v Middlesex CCC: Day Two
- LV= County Championship Durham CCC v Middlesex CCC: Day One
- Newcastle United Manager Alan Pardew Backed By Board
Related tags: Football
- Transfer Talk: San Lorenzo Still Hope To Sign Newcastle United's Fabricio Coloccini
- Newcastle United No To Signing Andy Carroll
- Newcastle End Of Season Stat Attack: NUFC Had Worst Defence And Dirtiest Player
- Sky Sources: West Ham And Liverpool Agree Fee For Andy Carroll
Related tags: Sunderland
- PFA Warning For Sunderland Boss Paolo Di Canio After Players' Complaint
- Tyne And Wear Football Team Of The Season: What Do You Think?
- Have Your Say: Sunderland AFC Fans' Survey 2013
- 'Psycho Drama Queen': Phil Bardsley's Girlfriend's Twitter Attack On SAFC Boss Di Canio
- Sunderland Boss Di Canio Criticises Phil Bardsley Over Casino Pictures
- Transfer Talk: Sunderland In For Striker Charlie Austin?
- Transfer Talk: Sunderland May Miss Out On Danny Rose
- Spurs 1 - 0 Sunderland: Bale Brilliance Sinks Paolo Di Canio's Side