Ronaldo hits 701st goal as Juventus pull clear in Serie A
Ronaldo was presented with a special jersey before kick-off by Juventus president Andrea Agnelli to mark his 700th career goal scored playing for Portugal during the week.
The 34-year-old hit his 701st after 19 minutes in Turin, with Pjanic adding a second eight minutes after the break following a blunder by Brazilian defender Danilo, who had earlier pulled Bologna level.
The defending champions are now four points clear of second-placed Inter Milan, who travel to Sassuolo on Sunday.
Atalanta stay third after throwing away a three-goal lead to draw 3-3 with Lazio in Rome, with fourth-placed Napoli closing the gap to just one point after Arkadiusz Milik’s double saw off Verona.
Bologna coach Sinisa Mihajlovic returned to the bench in Turin after his second course of chemotherapy as he battles cancer.
And the visitors were given reason to hope for a rare point against the Turin giants when Danilo responded to Ronaldo’s opener with a 29th-minute volley.
But Pjanic sealed victory with his third goal in four games in the 54th minute amid chaos in front of the Bologna goal.
Bologna keeper Lukasz Skorupski denied Ronaldo and in-form Gonzalo Higuain late before both the crossbar and Gianluigi Buffon frustrated Federico Santander’s push for a last-gasp equaliser for the visitors who slip to 12th place.
– Immobile punishes Atalanta –
Serie A leading scorer Ciro Immobile’s late brace of penalties helped Lazio wipe out a three-goal deficit in a thrilling 3-3 draw with Atalanta.
Atalanta, who travel to Manchester City in the Champions League on Tuesday, had led 3-0 with 21 minutes to go at the Stadio Olimpico.
But Immobile scored from the spot on 69 minutes and less than 60 seconds later set up Joaquin Correa for the second, before capping the comeback two minutes into injury time with his ninth goal in eight league games this term.
“There was a loss of focus on our part, but it’s hard to neutralise a team like Lazio at home,” said Atalanta coach Gian Piero Gasperini, who was furious with both penalties awarded.
“With penalties, nobody can understand a thing nowadays.
“Immobile went for a walk, felt someone touch him slightly and dived. I’ve seen it again and it’s obvious to me.
“Even more, on the second penalty, Immobile put his foot in front of De Roon. That’s not a penalty either.”