The Czech goalkeeper made his first start in the Barclays Premiership at the Riverside in place of the injured Paul Robinson.
Radek certainly handled the situation well and did what was asked of him on the day - unfortunately, he could do nothing about George Boateng's winner after it took a wicked deflection off Ledley King.
The result left us needing Manchester City to beat Middlesbrough by as narrow winning margin as possible next week as we try to beat Blackburn Rovers by three goals at least at the Lane - if City win 1-0, we need to win 3-0 to take seventh place.
"When the team loses it's no good for me personally," reflected Radek back at Spurs Lodge. "The goal was deflected and I think I would have got to the shot, it was just unlucky.
"The team want to qualify for Europe and now it's difficult for us to get into the UEFA Cup. We must win three or four-zero and Manchester City have to beat Middlesbrough as well.
"It could happen but we must concentrate on winning and the bigger the score, the better for us."
Radek is looking forward to a full home debut against Blackburn on Sunday having played only 22 minutes as substitute following Robbo's injury against Villa.
"It will be great to play at White Hart Lane in front of 36,000 fans and I think Tottenham have very good fans," he added. "We must win and wait to see what happens in Manchester."
Radek Cerny admitted any personal satisfaction over his full debut was quickly dampened by the result at Middlesbrough.