The versatile ace played alongside Jonathan Woodgate at centre back and could not prevent Jefferson Farfan from scoring the winner at White Hart Lane on Thursday night.
The 27-year-old remains optimistic over Spurs' chances to qualify for the quarter finals and told us that he wants his team to take inspiration from arch-rivals Arsenal's 2-0 win in Milan.
"Honestly tonight (Thursday) we didn't play well and PSV created the better chances for themselves," Zokora told setantasports.com.
"It's a shame because we had to take all three points, I mean we had to ensure we would qualify with a large win.
"I remain optimistic ahead of the second leg and until the end of the competition."
When asked about Spurs chances' to qualify at Philips Stadion with a two-goal difference, the African star answered: "Everything is possible yes. We have seen that Arsenal win 0-2 at Milan so it will inspire us."
Zokora was then asked how difficult defending against Peru international Farfan had been.
"It's far from easy because he's a very quick player and following him was a pain," he added. "We should forget this match and be focused on our London derby against West Ham."
The Ivory Coast international still believes that Juande Ramos can win a third consecutive Uefa Cup despite the disappointing result against the Dutch.
"Everything is possible in football and I hope that we can do it," he finished.