Ronnie O’Sullivan showed his class with what he said to Hossein Vafaei following his loss at the World Open on Thursday. The Rocket backed the Iranian to go and win the tournament after suffering a surprise defeat in the last-16 in China. O’Sullivan was the strong favourite to triumph again this week and add to the five tournaments he has already won this season. He started his campaign with a win over Michael White on Tuesday before beating Lyu Haotian 5-2 in the last-32 on Wednesday. The Rocket was far from his best in both matches but this season has picked up the habit of getting better as…