| A stoppage-time howler from goalkeeper Antonio Mirante handed Cagliari this potentially crucial victory in the relegation battle. These two sides have improved considerably over the last few weeks and were looking to build on that form. Cagliari gave Inter concern with their narrow 3-2 defeat at San Siro at the weekend, while Siena held Livorno to a 2-2 draw in the Tuscan derby. Antonio Langella remains sidelined with an ankle injury, while the visitors were without Gianluca Falsini and Simone Vergassola.
Budel drilled a free kick just over the bar and David Suazo drilled inches wide after skipping past Igor Tudor.
Antonio Chimenti gave Cagliari a scare when he came charging out, but Molinaro's header was off target.
After the break, Siena had their first real opportunity when Enrico Chiesa's trademark curling finish stamped its mark on the upright.
At the other end, substitute Cossu's free kick didn't take a touch and nearly took the goalkeeper by surprise, but he managed to arch his back and flick it over the bar.
The game seemed to be heading for a goalless draw, but deep into stoppages a howler from goalkeeper Antonio Mirante handed Cagliari the win. He dropped the ball under pressure from Suazo and defender Tudor, allowing the Honduras international to slide it into an empty net.
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