Cristiano Ronaldo commits 'unforgivable error' as Juventus is stunned by 10-man Porto in Champions League

(CNN)Cristiano Ronaldo's "unforgivable error" in extra-time against 10-man Porto in the Champions League proved decisive as Juventus was dumped out by the Portuguese side. With the sides all-square in the 115th minute and with penalties just minutes away, Porto was awarded a free-kick 35 yards away from the Juve goal. In a last-ditch attempt to send the Portuguese side through, Sergio Oliveira hit a speculative low shot which traveled through the legs of Ronaldo -- who had turned his back on the ball -- and squirmed past the diving Wojciech Szczęsny in goal. That gave Porto a 4-3 lead on aggregate and although Adrien Rabiot scored for Juve, it wasn't enough for the Italian giants as Porto,...