Match ends, Napoli 4, Frosinone 0.
Gonzalo Higuain broke the record for goals in a Serie A season, scoring a hat-trick to take his total to 36 as Napoli thrashed Frosinone.
The 28-year-old Argentine surpassed Gunnar Nordahl's record of 35, which had stood since 1949-50.
Higuain struck twice in 17 minutes after the break before netting with a superb 16-yard bicycle kick.
Victory secured second place - and a spot in next season's Champions League group stage - for Napoli.
They finished two points above Roma, who beat AC Milan 3-1 and will go into the Champions League play-offs.
Juventus, who sealed a fifth successive title in April, finished ninth points clear of Napoli.
Check out Serie A's top scorers here