Mark Williams is into the final of the Xi’an Grand Prix, meaning he is just one win away from becoming the oldest-ever ranking event winner.The Welsh snooker star saw off Daniel Wells 6-3 in the semi-final to make the final to fight for a prize worth £177,000.Williams made the World Snooker Championship final earlier this yearAFPWilliams will take on Shaun Murphy in Monday’s showpiece, where he can surpass the great Ray Reardon.Reardon is currently the oldest snooker player in history to win a ranking event, which he did so aged 50 years and 14 days in 1982.The former Welsh snooker ace won the Professional Players Tournament.But Williams would out-do his idol and fellow countryman out of the water if he succeeds here.He will be 50 and 206 days old when he faces Murphy, who got the better of Gary Wilson in the other semi.Williams would also create a total piece of unique history as well.Should he win, Williams would be the only player in the professional game to claim a title in every decade from his teens to his 50s.This will be his 44th ranking final across the glorious 33-year career he’s had.Williams has 26 titles to his name, and one more here would see him move just behind Steve Davis in the all-time list.Reardon is one of the greatest snooker players to grace the gameRexWilliams continues to deliver at the top of the gameGettyWilliams continues to defy oddsWilliams has yet to win an event this season, but he is usually in the latter parts of tournaments.Last season, he made the World Snooker Championship final despite the fact he was struggling so badly with his eyesight.Unfortunately for Williams and his fans, the final didn’t live up to expectations as Zhao Xintong demolished him.Speaking about his eyesight after the World Snooker Championship, he said: “I have been reading up and talking to people who have had it done and I’ve got to be honest, it is putting me off a bit.“I’ve got a big decision to make. A couple of people I have spoken to, especially Anthony Hamilton at length, have said it is no good under the lights and it has ruined his career.“It has sort of put me under pressure. After this is finished, it is something I am going to have to look more into.”Murphy stands in Williams’ way of making some historyGettyAs of yet, he hasn’t made a decision on that and is still playing.But it hasn’t stopped Williams, who is into the final after a contest against fellow Welshman Wells.The duo shared the first six frames, leaving the match in the balance.The high break up until that point had only been 42, but Williams showed his class to move through the gears and claim the next three to leave him on the brink of a couple of major achievements.