Barcelona lost their 100 per cent record after drawing 0-0 at Osasuna.
The visitors bossed possession and had the lion's share of chances - the best of which were passed up by Cesc Fabregas - but Osasuna held on to become the first team in La Liga to keep a clean sheet against Barca in almost two years.
"We should have won given the chances we created. I'm pleased with the team's performance," explained Martino, who lamented his men's accuracy in front of goal: "We weren't accurate in front of goal."
