Chennaiyin head coach John Gregory believes the AFC Cup jitters held his team back on the field against Minerva Punjab in their group game on Wednesday.
The Indian teams played out a drab draw in which Chennaiyin failed to convert the few chances they had created.
"It was a game we should have won. We had enough of the ball, particularly in the second half. There was a little bit of nervousness in our game. It is a big stage - the AFC Cup. We were not relaxed as we were in the earlier matches.