( CNN ) -- Diego Costa scores twice as Inter Milan beat Parma 5 - 1 at the San Siro on Saturday . Win puts Inter within a point of fourth - placed Roma , who win 4 - 0 at Siena . Inter won for the fifth successive match in Serie A to keep European football alive . Title hopefuls Lazio face the prospect of dropping eight points off the lead .
Diego Costa scores twice as Inter Milan beat Parma 5 - 1 at the San Siro on Saturday . Win puts Inter within a point of fourth - placed Roma , who win 4 - 0 at Siena . Inter won for the fifth successive match in Serie A to keep European football alive . Title hopefuls Lazio face the prospect of dropping eight points off the lead .