Inter Milan coach Walter Mazzarri has admitted that his side's missed chances left him frustrated in their 0-0 draw with Roma on Saturday.

Mazzarri said that he was pleased with his side's effort, but believes that they had the opportunity to take all three points had they taken their chances.

The former Napoli boss insisted that his side cancelled out Roma, but just didn't have the cutting edge in front of goal to complete the job.

"In the second half we were tired, as we had used up a lot of energy, but still played very well," Mazzarri told reporters. "There was the risk of defeat and we did see that risk from close range. After the break they changed their attitude and we lost in intensity.

"We moved well on the wings and forced Roma to work hard, causing them problems and limiting their scope. The credit for making Roma play badly is down to Inter.

"We have dropped many points along the way this season and it's a shame we again didn't make the most of scoring opportunities that we created."

Inter currently sit in fifth place in the Serie A table.