ROME, Sept. 23 (Xinhua) -- Juventus suffered the first defeat this season as they fell to Sassuolo 4-2 away on Saturday, with Wojciech Szczesny and Fabio Gatti committing howlers.

Juve entered into Saturday's game with an unbeaten record as they amassed 10 points after four rounds but found themselves on the back foot in the 13th minute as goalkeeper Szczesny awfully allowed Armand Lauriente's fairly straight strike to go through his gloves.

The away side got back on level terms minutes later with a stroke of luck when Federico Chiesa's cross forced Matias Vina to prod it into his own net.

Sassuolo restored the lead before halftime when Matheus Henrique set up for Domenico Berardi who was close to joining Juve this summer to hit in a curler out of the box.

The Old Lady fought back again in the 78th minute when Nicolo Fagioli laid it off for Chiesa to drill home from a close range.

However, the home side added another four minutes later when Szczesny meekly parried Lauriente attempt into Andrea Pinamonti's path, for whom to head in the rebound.

The Neroverdi sealed the win at the stoppage time in a dramatic way as defender Gatti didn't notice Szczesny was out of box, and horribly passed it into his own net.

With the frustrating defeat, Juve dropped to fourth on the table, while Lecce promoted to third.

Also on Saturday, AC Milan ended their dismal run as they got the better of Hellas Verona 1-0 thanks to Rafael Leao's heroic.

The Rossoneri suffered a 5-1 setback against city rivals Inter Milan in the last round and were just coming off a goalless tie against Newcastle in the UEFA Champions League.

The fixture was delayed by 25 minutes as the torrential rain made the pitch waterlogged and muddy. Leao broke the deadlock just eight minutes into the game when Verona were caught in possession, Olivier Giroud's pass allowed the Portuguese to turn on the afterburners to finish with a low-strike, which was enough for Milan to wrap up a victory.

Elsewhere, Lazio continued their shaky forms as they shared the spoils with Monza at 1-1, with Roberto Gagliardini canceling out Ciro Immobile's opening penalty.