article_snippet: Ronnie O'Sullivan beat Graeme Dott 4-1 to progress to the semi-finals of the World Grand Prix in  Llandudno, but called Ronnie O'Sullivan performance 'diabolical'.
article_snippet: The 39-year-old did not reach the heights Ronnie O'Sullivan is capable of, but was still more than good enough to get past the Scot - the man Ronnie O'Sullivan beat to win the second of Ronnie O'Sullivan five World Championships in 2008.
article_snippet: Ronnie O'Sullivan was in no mood to pat Ronnie O'Sullivan on the back after beating Graeme Dott .
article_snippet: Neither man made a break of three figures and Ronnie O'Sullivan missed a handful of easy-looking shots, but Graeme Dott was unable to punish Graeme Dott, most notably in the fourth when Graeme Dott missed a green off the spot as Graeme Dott tried to clear to level at 2-2.
article_snippet: Ronnie O'Sullivan made Graeme Dott pay, but was in no mood to pat Graeme Dott on the back. '
article_snippet: Graeme Dott has had a good tournament, been consistent and is always a tough match,' Ronnie O'Sullivan told ITV4. '
article_snippet: Ronnie O'Sullivan will face Stuart Bingham in the last four after Stuart Bingham beat Mark Davis 4-0 in a low-scoring affair.
highlights_snippet: Ronnie O'Sullivan beat Graeme Dott 4-1 to progress to the semi-finals .
  
highlights_snippet: Ronnie O'Sullivan will now face Stuart Bingham in the last four in Llandudno .