"The grass [at the PJN stadium, Margao] is too long in some places which is why there was an uneven bounce," he said.
The Kolkata unit drew their first match against Sporting Clube de Goa in their opening fixture of their new campaign, and Sen had no complains with the result.
"I'm okay with the result. The moment Sporting Clube de Goa was putting pressure on us, we scored, but we couldn't score after they equalised [for the second time]," observed the 50-year-old.
"Congratulations to Sporting Clube de Goa," he wished his match rivals after sharing a point with the Goan side on Sunday.
"We were leading 2-1 until the last 10 minutes, but then we conceded due to a defensive lapse which was my only disappointment.
"Overall the performance was okay without Denson and Josimar."
How do you stay up with football when on the move? With http://m.goal.com –your best source for mobile coverage of the beautiful game.