The Northern Irishman won 4-0 to set up a second-round encounter with Jack Bradford, who beat Elliot Slessor 4-1. Victory over Bradford on Friday morning will see Swail qualify for the main event in Furth.
That clash is one of just 12 outstanding second-round matches to be played on Friday after 72 games in the opening two rounds were completed on Thursday.
Adam Wicheard and Michael Wild were among those winning through on the opening day of action.
Round three signals the start of the main event, with the likes of Mark Selby and John Higgins entering the fray on Friday.
Second-round results
Oliver Lines 4-2 Itaro Santos
Alex Taubman 2-4 John Astley
Justin Astley 4-1 Dean Goddard
Adam Wicheard 4-1 Wan Chooi Tan
Oliver Brown 4-2 Lee Page
Alexander Ursenbacher 4-0 Hendrik Henschke
Carl Rosenberger 4-3 Stefan Schenk
Sanjin Kusan 4-0 Hendrik Glax
Garry Steele 0-4 Chris Norbury
Jeff Jacobs 1-4 Ricky Norris
Tin Venos 0-4 Mitchell Mann
Michael Wild 4-0 Alain van der Steen
Stefan Merkel v Julian Treiber
Matthias Porn 0-4 Aaron Busuttil
John Parkin 2-4 Jeff Cundy
Johnny Kells 4-1 Ruediger Fehrmann
Phil Barnes w/o Brynjar Valdimaisson
Ben Harrison 4-0 Dragan Rosa
Andreas Hartung 0-4 Mark Vincent
Patrick Einsle 4-0 Nicole Breitenstein
First-round results
Oliver Lines 4-0 Thomas Scholl
Itaro Santos w/o David Singh
Ronny Buchholz 0-4 Alex Taubman
John Astley 4-0 Ron Florax
Sybren Sokolowski 0-4 Dean Goddard
Angelo Rizzo 1-4 Adam Wicheard
Simon Morgan 0-4 Wan Chooi Tan
Oliver Brown w/o Adrian Gunnell
Lee Page w/o Eyad Mohammed Al-Ansari
Alexander Ursenbacher 4-0 Laurin Winters
Hendrik Henschke w/o Husain Faud
Stefan Schenk w/o Rami Ali
Hendrik Glax 4-2 Klaus-Dieter Geiger
Garry Steele 4-0 Ralf Guenzel
Christopher Norbury 4-0 Hans Blanckaert
Jeff Jacobs w/o Lucky Vatnani
Dieter Meier 2-4 Ricky Norris
Tin Venos w/o Robert Drahn
Mitchell Mann w/o Wael Alqassimi
Sebastian Lahruis 0-4 Alain Van Der Steen
Julian Treiber w/o Mohamed Al Shaikh
Aaron Busuttil w/o Ali Abdulkareem
John Parkin w/o Robert Valiant
Jeff Cundy w/o Benjamin Buser
Johnny Kells 4-3 Kilian Baur-Pantoulier
Ruediger Fehrmann 4-3 Norbert Hofheinz
Phil Barnes 4-3 Norbert Eckstein
Brynjar Valdimarsson w/o Mohamed Omar
Dragan Rosa 4-1 Michele Battaglia
James Cahill 1-4 Mark Vincent
Patrick Einsle 4-0 Ali Kirim
Nicole Breitenstein w/o Habib Subah
Reanne Evans 1-4 Andreas Ploner
Terry Challenger w/o Shahram Changezi
Stuart Carrington w/o Husain Mahmood
Ian Glover 4-0 Stefan Gerst
Stephane Ochoiski 1-4 Sam Harvey
Alois Riegel 1-4 Bernd Strnad
Michael Seidel 0-4 Duane Jones
Joerg Petersen 1-4 Luca Kaufmann
Elliot Slessor 1-4 Jack Bradford
Joe Swail 4-0 Berislav Cerinski
Marc Davis 4-3 Sascha Breuer
Tomasz Skalski w/o Maurice Le Duc
Greg Davis 2-4 Kishan Hirani
Joe Steele 1-4 Kyren Wilson
Felix Frede 0-4 Alex Davies
Ronny Pawlitza 1-4 Ole Steiner
Soner Sari 4-0 Andreas Vetter
Christopher Keogan w/o Mario Wehrmann
Tobias Hirmer 4-1 Sherief Shemeis
Christof Biniarsch 0-4 Liam Monk
