Barcelona beat Bayer Leverkusen 2-1 on Tuesday, while there were also Champions League wins for Bayern Munich and Valencia.
Bosnia look set to be without captain Edin Dzeko for next month's European Qualifer against Wales.
Juventus' poor Serie A start continued with defeat at Napoli, while Roma returned to winning ways against struggling Carpi.
Juventus could only draw 1-1 at home to Frosinone in Serie A on Wednesday, as leaders Inter Milan beat Hellas Verona 1-0.
A Gonzalo Higuain-inspired Napoli ran riot against Lazio while there were also wins for Inter Milan and Fiorentina.
Barcelona head coach Luis Enrique felt his side 'deserved to win' after a 1-1 draw with Roma in their Champions League opener.
Wojciech Szczesny will be out for up to six weeks after injuring his finger in Roma's draw with Barcelona.
A look at the night's Champions League fixtures as Barcelona started the defence of their title with a 1-1 draw at Roma.
Look back at what happened as Barcelona started their Champions League defence with a 1-1 draw at Roma.
Roma were 2-0 winners in the first-ever derby clash against bottom-side Frosinone at the Stadio Matusa.
Fiorentina have lodged a complaint with FIFA over Mohamed Salah’s loan move from Chelsea to Roma.
Ashley Cole has been left out of Roma’s Champions League squad.
Roma midfielder Kevin Strootman is expected to make a full recovery after undergoing yet more surgery his left knee.
Watford have added three players to their squad on Deadline Day.
Juventus had two men sent off as their dismal start to the Serie A season continued at Roma.
Arsenal were handed a tough draw in the Champions League group stages as they were paired with Bayern Munich.
We pick out some of the biggest Euro deals of the summer, featuring Bacca and Vidal...
PSG left-back Lucas Digne has joined Roma on a season-long loan deal.
Aston Villa have opened negotiations with Roma over the signing of attacking midfielder Adem Ljajic, according to Sky sources.
Serie A champions Juventus saw their 47-match unbeaten home league record come to an end against Udinese.