You think he fell to pieces this year?
Or are you talking about the Messi magic that out him on his arse?
2014/15 group game at our place, gave the ball straight to Kun which allowed us to win the game.
2014/15 Semi-Final 2nd leg v Barca, no control over the backline despite him leading it, yes Benatia was awful but even then his own decision making was poor, and he made virtually no attempt to go and block the ball for the 2nd goal, as well as the defensive line which is something Vinnie is really good at, being all over the place.
2013/14 semi-final 2nd leg, same problems, out of position, not committing to tackles meaning Real ran through into dangerous areas, gave up on trying to cut Bale off at source for the third and instead let him run. Jumped over the ball in the wall for the 4th, turning his back on it, generally doing a Nasri and being a coward.
2013/14 against us in the Allianz, not only let the ball bounce past him for Silva's goal, but also put the lamest Nasri-like boot out to try and stop the ball coming back in, dreadful defending. His pathetic attempt at a clearance also gave Milner the winner.
2015/16 against Arsenal, his dreadful attempted marking of Giroud gave Arsenal the lead. Yes Neuer cocked up, but Boateng still allowed Giroud to beat him. Didn't do enough to block Bellerin's cross for the 2nd despite getting there.
2012/13 in the final, it was him stumbling over after heading the ball away that put Reus through on Dante which led to the penalty and Dortmund's equaliser.
2015/16 v Atletico 2nd leg, caught jogging around putting half a leg out miles up the pitch when Atletico broke for their goal.
2013/14 first leg v Madrid, let Coentrao round the back of him for him to cross to Benzema for the only goal.
And of course he was made to look a tit in the Nou Camp. Messi was indeed brilliant for that goal, and Boateng also managed to embarrass himself. Also in that game managed to step up poorly and play Suarez onside for a clear 1-on-1 that Neuer bailed him out of, let Suarez past him again for another clear chance, again half-committed in the build-up to the first goal which allowed Barca to play round him, then he was made a complete tit of by Messi, mainly because he faced up the wrong way and then fell over himself, he tried to turn around from running towards his own goal and tackle Messi with his right foot, such was his terrible positioning, body shape and decision-making. I'll let him off another non-tackle for the 3rd goal.
if that's not enough to show Boateng isn't top class, then I don't know what is. Yes he's played with Dante and Benatia who have been calamities at times, and yes the midfield losing the ball in dangerous areas and the counter-attack being sprung doesn't help, but part of his job, especially in a Pep team, is to manage to deal with at least some of the above, a lot of which was either basic mistakes, basic defending which he did poorly or a complete lack of leadership, awareness and initiative to bail the team out, which is what the best defenders do. Yes, on a number of occasions someone else made a mistake where Boateng ended up the last line of defence before Neuer, but I don't think it's unfair to say on many of those occasions he picked the wrong option, which was normally backing off, letting the opposition run towards the goal at the angle they wanted and create the chance.
He's a coward, he switches off, he has no leadership skills, too often he chooses to jog around, his decision-making is poor and often when it comes to the crunch he chooses the option which will mean he doesn't get a kick, rather than the one which is best for the team.
He's not top class and I genuinely believe he's a key reason why Pep didn't win a CL at Bayern.
