Inter notched up a third consecutive victory, beating Spal thanks to a Mauro Icardi penalty and stunning Ivan Perisic volley.
Although the Nerazzurri were under pressure for long periods and allowed Spal several good chances, their quality made the difference.
Joao Mario was tripped just inside the box and VAR was required to assign the spot-kick, converted coolly by Icardi.
A Milan Skriniar thunderbolt rattled the crossbar, but Inter eventually added a second goal with Perisic firing a ferocious left-foot volley into the near top corner.
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