Ronnie O'Sullivan has withdrawn from next week's BetVictor Welsh Open for medical reasons.
O'Sullivan was due to face Liam Graham in the first round on Monday at 12.30pm in Llandudno. Instead, Graham will be up against Alfie Davies.
David Grace has also pulled out for personal reasons. He was due to meet Shaun Murphy on Monday at 12.30pm, and Grace has been replaced by Barry Pinches.
The event runs from February 12 to 18.