Cristiano Ronaldo made a winning start to his Juventus career as his new club came from behind to beat Chievo 3-2 in a dramatic start to the Serie A season.
Ronaldo was thwarted several times by veteran Chievo goalkeeper Stefano Sorrentino and his handball in the build-up led to a late Juventus goal being disallowed.
But, in the next attack, Federico Bernardeschi turned the ball in to give the champions a winning start.
Meanwhile, in the UK Premier League, a second successive Chelsea win under Maurizio Sarri, 3-2 over an Arsenal side who have suffered back-to-back defeats under Unai Emery, gave both managers a crash course in the unpredictability of English football.
Alonso settled the game when Belgium winger Eden Hazard, on as a substitute, carved open the Arsenal defence for the Spanish defender to finish in Sarri's first home game in charge.