The Latics lost the game 2-1, following goals from Blackburn duo Morten Gamst Pedersen and Niko Kalinic. Gary Caldwell scored Wigan’s goal.
“Our first-half performance wasn’t good enough. We weren’t ourselves at all, and we couldn’t understand what was needed,” said a baffled Martinez.
“We made a few adjustments at half-time, and I was delighted with the reaction because we controlled the game and imposed ourselves more.
“You could feel after we scored we were going to be the team to win it, so to lose the game the way we did with a free header and lapse of concentration is very hard to take.”