John Higgins trails Thepchaiya Un-Nooh in World Championship first round after eventful session of doubles and centuries
John Higgins will require a second session comeback in order to reach the next round of the World Championship after Thepchaiya Un-Nooh impressed when taking a 5-4 lead on Tuesday afternoon. Un-Nooh, ranked 53 in the world, is attempting to make the second round of the World Championship for the first time in what is his fourth appearance.


