30' PENALTY! Now Roma have a decision in their favour! Veretout shoots goalwards from the edge of the box and Rabiot clearly handles.
29' WOW! This is contentious! Dzeko goes to ground ahead of Chiellini just as he looks to be clean through on goal. The small crowd at Stadio Olimpico implore the official to send Chiellini off. But the referee instead spots Dzeko's initial tug on the defender's shirt and gives the foul the other way. It looks a good decision, but Dzeko is not happy.
28' A superb Chiellini challenge gives Morata the chance to run at the Roma back line with Ronaldo to one side and Ramsey to the other. But Morata looks for Ronaldo and gets the pass all wrong. Roma escape.
27' Spinazzola is looking to get forward every time he gets the ball and clearly has the beating of Danilo. A dance inside past both the full-back and Rabiot prompts cheers.
24' Spinazzola gets a round of applause as he leaves Danilo in his wake with a smart stepover, but the ball runs out of play.
23' Danilo is offside! Mirante is not to know and saves well from an eight-yard header after Chiellini loops Kulusevski's corner back across goal.
23' Roma are conceding corner after corner, the latest as Ibanez steps in ahead of Ronaldo from McKenni's pass.
22' Kulusevski and Ramsey combine impressively down the right and a cross forces a hurried clearance.
22' Dzeko might have been looking to direct a Juve corner goalwards had the transfer market played out differently. Instead, he thunders a header away.
21' Juve go short with the corner, but Kulusevski's centre is blocked behind for another.
21' Good defending! Ibanez stoops to head Danilo's dangerous cross from deep behind for a corner.
20' Juve's midfielders have been a little careless so far. Morata gets down the channel onto Chiellini's pass, lays the ball back to Cuadrado, who in turn looks for Rabiot, but the Frenchman passes straight out of play. McKennie has been guilty of similar.
17' Spinazzola gets forward down the Roma left but has five Juve bodies blocking his path to goal as he cuts inside to shoot. He goes for goal regardless and unsurprisingly sees his effort blocked.
17' Morata wins a free-kick 30 yards from goal and then gets on the end of Kulusevski's delivery, but he is a long way out and his header loops over.
15' Juve have control but are struggling to breach the final third. Roma, by contrast, look more than happy to play on the counter.
12' SAVE! Szczesny denies Mkhitaryan a stunning individual goal! McKennie and Kulusevski combine smartly in the Roma half, but a poor touch from the former is pounced upon. Mkhitaryan runs at the Juve goal from close to halfway and dummies past Bonucci's challenge before shooting hard and low but straight at the advancing goalkeeper.
10' McKennie swipes at a Pedro cross, but Szczesny is up first to claim the loose ball.
10' Juve are not happy as Danilo goes down under pressure from Spinazzola and knocks the ball behind, conceding a corner as no foul is given.
8' McKennie's dallying in midfield almost lets Mkhitaryan in, but Chiellini lunges into a tackle. Ronaldo can lead an attack at the other end yet sees a speculative left-wing shot blocked.
7' Now Morata is offside. He and Ronaldo know each other well from their Real Madrid days. The two are staying central early on.
6' Ramsey gets forward down the left and shoots straight at the goalkeeper from a tight angle, but the flag is up for offside following Morata's pass.
4' Juve enjoy a spell of possession for the first time and seemingly shift to a back three, allowing Cuadrado to push on. It will be interesting to see how these shifting tactics fare as the game wears on.
2' Roma immediately look to get at Cuadrado, with Pedro crossing, but the ball is nodded clear in front of Dzeko in the centre.
1' It appears as though Juve are indeed lining up in a 4-4-2. Last week's 3-4-1-2 had been predicted in some quarters, but Cuadrado is at left-back with Ramsey ahead of him.
1' KICK-OFF: Roma get us up and running!
Roma won 3-1 at Juve on the final day of last season and so are now bidding to win back-to-back Serie A games against the Bianconeri for the first time since 1995.
New boy Morata is straight into the Juve team in their only change. The shape of the team remains to be seen as Frabotta makes way. Meanwhile, Dybala is back among the substitutes. Kumbulla makes his debut for Roma, who restore Bianconeri-linked Dzeko to the line-up.
Subs: Carlo Pinsoglio, Gianluigi Buffon, Mattia De Sciglio, Arthur, Paulo Dybala, Douglas Costa, Daniele Rugani, Merih Demiral, Rodrigo Bentancur, Gianluca Frabotta, Manolo Portanova, Giacomo Vrioni.
Juventus (4-4-2): Wojciech Szczesny; Danilo, Leonardo Bonucci, Giorgio Chiellini, Juan Cuadrado; Dejan Kulusevski, Adrien Rabiot, Weston McKennie, Aaron Ramsey; Alvaro Morata, Cristiano Ronaldo.
Subs: Pau Lopez, Pietro Boer, Bryan Cristante, Gonzalo Villar, Carles Perez, Bruno Peres, Amadou Diawara, Mirko Antonucci, Riccardo Calafiori, Justin Kluivert.
Roma (3-4-2-1): Antonio Mirante; Gianluca Mancini, Ibanez, Marash Kumbulla; Davide Santon, Jordan Veretout, Lorenzo Pellegrini, Leonardo Spinazzola; Pedro, Henrikh Mkhitaryan; Edin Dzeko.
Let's get the team news from Stadio Olimpico...
Napoli - 6-0 victors against Genoa today - are up next for Juve, so it is vital they lay a marker down in the early stages of another title race under new coach Andrea Pirlo.
The champions made a winning start to the new campaign against Sampdoria last week but now face what should be a far tougher test at Roma. The Giallorossi were incredibly 3-0 losers at Verona last week, however, and will need vast improvement if they are to trouble Juve.
Hello and welcome to our live text commentary of Roma versus Juventus in Serie A!