Inter looked almost certain to grab a winner as the second half developed but wasted several chances as their dominance grew. It must be said, though, that Fredy Guarin was unlucky to strike the post after the break, and they encountered Lazio goalkeeper Federico Marchetti in inspired form.
It was Guarin who was most wasteful for Inter with not a single one of his six shots on target, whilst forwards Antonio Cassano and Diego Milito were limited to just one effort each—Cassano's sole shot was brilliantly saved by Marchetti low to his left.
Ultimately, though, Inter would be given a lesson in the importance of clinical finishing by Lazio striker Miroslav Klose. The veteran forward had three shots during the match, none of which were from a particularly clear-cut chance, but the last of which was ultimately decisive.
When the ball slipped down the inside of defender Andrea Ranocchia by Stefano Mauri, Klose showed his natural instincts to get to the ball ahead of the younger defender and finish low into the corner—all while carrying a knock.
The Germany international, as he has so often in his career, delivered a prime example of why every top side needs a cool head in front of goal and notched his 10th goal of the season, earning his side a valuable three points.