Mitchell held his nerves in a exciting leg-decider to book his place in the quarter-finals.
Glen Durrant and Gary Robson also came through to the next round at the Winmau
World Masters in Bridlington. Durrant whitewashed Gary Stone 3-0 in sets, while Robson beat Mario Vandenbogaerde.
The first shock of the day was caused in the ladies event, where Casey Gallagher defeated Lorraine Winstanley 4-0. Anastasia Dobromyslova overcame Sue Gulliver 4-1 in legs.
The action kicks off at 1pm and all matches are streamed on
Winmau TV.
Casey Gallagher (ENG) (77.08) 4-0 (69.23) Lorraine Winstanley (ENG) Glen Durrant (ENG) (97.18) 3-0 (88.97) Gary Stone (SCO) Mario Vandenbogaerde (BEL) (95.25) 1-3 (92.19) Gary Robson (ENG) Sue Gulliver (ENG) (70.77) 1-4 (73.38) Anastasia Dobromyslova (RUS)
Scott Mitchell (ENG) (84.56) 3-2 (85.67) Willem Mandigers (NL) 15.30 David Copley (ENG) v Eddie Mordica (ENG) 16.00 Mikuru Suzuki (JAP) v Deta Hedman (ENG) 16.30 Jim Williams (WAL) v Richard Veenstra (NL) 17.00 Dave Parletti (ENG) v Scott Waites (ENG) 17.30 Corrine Hammond (AUS) v Lisa Ashton (ENG) 18.00 Michael Unterbuchner (GER) v Wayne Warren (WAL) 18.30 Adam Smith-Neale (ENG) v Mark McGeeney (ENG)