By Richard Martin DORTMUND, Germany (Reuters) - Real Madrid coach Zinedine Zidane denied on Monday there was a rift between him and Cristiano Ronaldo after the team's talisman appeared to react angrily to being substituted in Saturday's 2-2 draw at Las Palmas. Ronaldo's response to being taken off in the 72nd minute of the game has been the subject of much attention in the Spanish media in the build up to Tuesday's heavyweight Champions League clash with Borussia Dortmund. Zidane, however, said the incident has already been forgotten. More...