Massimiliano Allegri wants Juventus to cut out the lapses in concentration that have plagued their season so far.

Juve suffered a last-gasp 3-2 defeat to Lazio in the Supercoppa Italiana in August in a performance that left Allegri deeply unhappy despite Paulo Dybala's brace launching a belated fightback.

The performance featured errors that the ex-AC Milan boss believes are yet to be fully eliminated – as evidenced by Atalanta's second-half resurgence in Bergamo.

"Lazio will be a difficult game, but even beyond tomorrow we need to make a big leap to tackle the season in the best way and be competitive in March," Allegri explained.

"We need to get rid of those moments which happened after the 2-0 against Sassuolo [Juve eventually won 3-1], at 2-0 after half-time against Torino - when we conceded three free-kicks on the flank - and in Bergamo, when we stopped playing as well as defending.

"These are the moments of the game we need to improve, because otherwise we risk throwing points away during the season.

"The Supercoppa was a strange match, because it was decided on the counter-attacks. In the last half-hour the team did well, but at the same time I remember the Lazio goalkeeper had the ball and four turned their shoulders, so there was less attention.

"That will make the difference this year because of the teams we're up against."

Juventus sit two points behind Napoli at the summit ahead of a mouthwatering weekend in Serie A, with the leaders travelling to Roma on Saturday before the first Milan derby of the campaign on Sunday.