ROME — Nearly a quarter of the way through Serie A there’s still no clear front-runner.

Defending champion Napoli and Gian Piero Gasperini’s Roma are level on top, three points ahead of the two Milan clubs.

Nobody is counting out Inter Milan, which has a deeper bench than any of the other contenders, or AC Milan, which isn’t competing in Europe and will be more rested as the season wears on.

The parity is nothing new.

Serie A has become the most unpredictable of Europe’s five biggest domestic soccer leagues with four different champions over the last six seasons, with last season marking the second time in four years that the title race went down to the last round.

Key matchups

Sunday’s meeting between Milan and Roma at the San Siro could add some clarity to the title race.

Napoli c

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