Thiago Motta was left frustrated with Juventus' inability to make their dominance count after Razvan Marin's late equaliser snatched a 1-1 draw for Serie A strugglers Cagliari.

Dusan Vlahovic's early penalty gave Juve the lead but Marin's 88th-minute spot-kick cost the hosts two important points that would have moved them to within one of leaders Napoli.

Marin's late salvaging act was the first goal Juventus have conceded this season in the league, though their inability to build on the early strike was what head coach Motta bemoaned after Sunday's draw.

"Already in the first half, after the goal, we were content to control the game. It's no good," Motta told DAZN.

"We have to keep attacking. In the second half, we created chances but we didn't exploit them. There was always the feeling that Cagliari could come back into the game.

"In Serie A, all games are complicated, regardless of who we face and whether we play at home or away. Today we left room for Cagliari to get back into the game."

Vlahovic may have converted the penalty but was also guilty of missing an excellent chance to extend Juve's lead when he fired wide on the rebound from close range.

Motta's side accumulated a tally of 2.57 expected goals (xG) overall, compared to Cagliari's 1.12, suggesting three points should have ended in the hands of the profligate Juve.

The Italian head coach refused to point the finger at Vlahovic, though insisted improvements are needed.

"You can't say anything, it's a match situation. It happens and will happen," Motta said. "But there are other things that we can certainly do better in order to compete, to be able to continue to grow."

Francisco Conceicao made his first start of the season against Cagliari, but the Portugal winger was sent off late in the game when he received a second booking for simulation in the penalty area.

"I haven't seen the images, if it's simulation, it's the correct decision. It's something we've been talking about for a long time, simulations are not good for the game," Motta added in his press conference.

"I trust the referee, but now a precedent opens up and it must always be like this. It must always be done, not every now and then."