Jack Lisowski says he will need to play better if he is to progress to the latter stages of the UK Championship.
The world number 48 prevailed 6-4 past Zak Surety in York on Tuesday to reach the second round.
But the 24-year-old from Cheltenham believes he will have to be much improved against either Nigel Bond or Graeme Dott on Sunday.
"I was not great, so I need to improve - but I'm glad to be in the tournament," said Lisowski.
"It was a close game - there were just a lot of scrappy frames and it was quite tense.
"I think I need to improve and get in a few more days' practice."
Lisowski has returned home before a possible meeting with former world champion Dott in the next round.
"I have had a few deciders with Graeme Dott and obviously he is the favourite," he said. "I think I have won one and lost one against him but you never know."