Albert Adomah says he was initially unaware his penalty miss had condemned Middlesbrough to defeat in Tuesday's epic League Cup tie with Liverpool.
The two sides traded 29 penalties in a shootout after the game finished 2-2 after extra-time, before Adomah missed with number 30 as Boro lost 14-13.
"When I missed I thought Liverpool had to take a penalty, so I was a bit surprised to see the players coming towards me," Adomah told the BBC.
"I didn't know we took 30 penalties."
Championship side Boro forced penalties against their Premier League opponents after Adam Reach and Patrick Bamford goals cancelled out Jordan Rossiter and Suso efforts.
Simon Mignolet saved Boro's first penalty from Bamford only for Raheem Sterling to miss Liverpool's fifth. The next 20 penalties were all scored as player after player from each side - including both goalkeepers - handled the pressure.
But when Ghana international Adomah pushed his kick wide, Liverpool could finally celebrate victory.
|Penalty shootout records|
|The 14-13 scoreline equalled the record set in the Football League Trophy in August 2011, when Dagenham & Redbridge beat Leyton Orient|
|The previous longest League Cup penalty shootout was 9-8 on three occasions - Arsenal v Rotherham in 2004, and Man City beating Stoke and Aston Villa beating Colchester both in 1982|
|The longest in the FA Cup was Macclesfield beating Forest Green 11-10 in the first round in November 2001|
|The record for the most successful consecutive kicks in English football is 29 when Brockenhurst beat Andover 15-14 in the Hampshire Senior Cup last year|
"I'd actually lost count. It just went on and on and on until I missed!" Adomah added on the BBC World Service's Sport Today programme.
"It was an unbelievable experience playing at Anfield. The atmosphere was tremendous."
Many of the players successfully converted two spot-kicks, but despite dispatching one of the best efforts first time around, Adomah was unable to join that group.
"It's difficult knowing that you scored one. There's more pressure and more nerves," he explained.
"I tried to copy the first one but it didn't work out."
Head coach Aitor Karanka described Middlesbrough's battling display as "Champions League" class.
He added to BBC Tees: "I'm very proud of my players and the club. Our performance was perfect - we were twice losing and had a very good reaction.
"We were fighting for 120 minutes but the players tired, not just because they ran a lot, because it was at Anfield and there is pressure.
"We showed a lot of personality. I'm very pleased."
You can hear the full interview with Albert Adomah on Sport Today at 1630 GMT on the BBC World Service, or visit the programme's homepage for details of how to listen again.