Paulo Dybala grabbed a hat-trick to give Juventus a dramatic 4-2 win at Genoa on Saturday as the Serie A champions recovered from going two goals down in the first seven minutes.

Beaten 3-1 by Genoa last season, Juve fell behind after 19 seconds when Miralem Pjanic accidentally turned Goran Pandev’s pass into his own net.

It got worse for Juve when Andrey Galabinov converted a penalty awarded with the help of a video review after he was tripped by Daniele Rugani. Juventus, however, claimed that Galabinov was offside at the time.

Dybala pulled one back in the 14th minute when he turned in Pjanic’s pass, then equalised in first-half stoppage time, from another penalty, awarded after video technology spotted a handball by Darko Lazovic.

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Juan Cuadrado put Juventus ahead with a superb goal in the 62nd minute, the Colombian controlling Mario Mandzukic’s chipped pass on his chest before turning inside his marker and curling a left-foot shot into the net.

Juventus were by now in control and Dybala wrapped it up in stoppage time when he cut inside a defender and sent a low shot between Mattia Perin and the near post to leave the Turin side on six points from their first two games.

The video assistant referee (VAR) system played a significant role in the match, and after the match Juventus goalkeeper Gianluigi Buffon criticised the way the system had been used.

“They are overusing it and making mistakes,” Buffon said. “It’s something which, if used sparingly, could give us excellent results and be a good thing for football. But I don’t like it this way, it’s not good.

“In football, it’s not a penalty every time there is contact,” Buffon added. “You can’t stop the game every three minutes – it makes it like water polo.”

Facebook Twitter Pinterest Mauro Icardi (right) celebrates scoring for Inter at the Stadio Olimpico. Photograph: Riccardo Antimiani/AP

Internazionale continued their strong start to the season with a 3-1 away victory at Roma, as Luciano Spaletti enjoyed a winning return to his former club. Edin Dzeko put Roma ahead in the 15th minute and the hosts hit the woodwork three times as Inter made them pay for their profligacy.

Inter levelled through Mauro Icardi from an Antonio Candreva assist in the 67th minute. Icardi doubled his tally 10 minutes later, controlling Ivan Perisic’s low cross before swivelling to fire into the bottom left corner. Matías Vecino sealed the result three minutes from time with his first goal since joining Inter from Fiorentina.

Elsewhere in Serie A, promoted Benevento were beaten 1-0 at home by Bologna in their first home top-flight match and were denied a late equaliser when Fabio Lucioni’s effort was ruled out for offside after a video review.