Watch: Ronaldo puts exclamation mark on classic Real Madrid counter-attack

(Courtesy: @FanSportsClips)

Cristiano Ronaldo is showing no signs of slowing down.

The Real Madrid superstar belted his second Champions League goal of the season Tuesday against Borussia Dortmund - the beginning of what should be another prolific campaign for the Portuguese.

Ronaldo was unhappy with his last outing for Los Blancos - manager Zinedine Zidane hooked the 31-year-old early in last Sunday's 2-2 draw with Las Palmas - but his emphatic strike at the Westfalenstadion put those frustrations firmly in the rear-view mirror.