Simone Inzaghi admits "it hurts to lose" following Inter's surprise 1-0 defeat by relegation-threatened Sassuolo.

The newly crowned Scudetto winners suffered only their second loss of the season in Serie A, as Armand Lauriente's first-half goal was enough to give the 19th-place hosts victory at Mapei Stadium.

Sassuolo, who boosted their survival hopes, subsequently completed the league double over the Nerazzurri, having also prevailed 2-1 at San Siro in September.

Meanwhile, Inter were beaten by a team in the bottom two for the first time since November 2014, with Inzaghi urging his players not to be distracted by their title triumph.

"We started sluggish and didn’t have the right approach to the game," he told Sky Sports Italia. "I'm sorry for the defeat, but credit must be given to Sassuolo for a performance of great effort and sacrifice.

"It's right to enjoy [our Scudetto victory], but there are still three games to go and we have to focus. It hurts to lose, and it should hurt."

After guiding Inter to their 20th Serie A crown, Inzaghi is hopeful he can keep the majority of his squad intact ahead of next season.

However, the Nerazzurri boss did emphasise the club's need to strengthen before launching their Scudetto defence.

"I already told the club that I want to go into next season with all the players I had this term, not losing a single one," he said. "Considering all the games we need to play and the length of the season, we do need a bigger squad."