Several upsets in Men's Singles Round 2 according to the rankings...
#47 Lee Sangsu (KOR) def. #6 Dimitrij Ovtcharov (GER) 4-3
#62 Liam Pitchford (ENG) def. #20 Tiago Apolonia (POR) 4-2
#63 Stefan Fegerl (AUT) def. #21 Robert Gardos (AUT) 4-2
#69 Chen Weixing (AUT) def. #23 Yuto Muramatsu (JPN) 4-0
#80 Kou Lei (UKR) def. #26 Bastian Steger (GER) 4-2
#61 Jiang Tianyi (HKG) def. #29 Chen Chien-An (TPE) 4-0
#56 Patrick Franziska (GER) def. #31 Steffen Mengel (GER) 4-1
#44 Sharath Kamal Achanta (IND) def. #35 Simon Gauzy (FRA) 4-1
#91 Adam Pattantyus (HUN) def. #49 Adrian Crisan (ROU) 4-2
#133 Joao Geraldo (POR) def. #86 Ho Kwan Kit (HKG) 4-3
#47 Lee Sangsu (KOR) def. #6 Dimitrij Ovtcharov (GER) 4-3
#62 Liam Pitchford (ENG) def. #20 Tiago Apolonia (POR) 4-2
#63 Stefan Fegerl (AUT) def. #21 Robert Gardos (AUT) 4-2
#69 Chen Weixing (AUT) def. #23 Yuto Muramatsu (JPN) 4-0
#80 Kou Lei (UKR) def. #26 Bastian Steger (GER) 4-2
#61 Jiang Tianyi (HKG) def. #29 Chen Chien-An (TPE) 4-0
#56 Patrick Franziska (GER) def. #31 Steffen Mengel (GER) 4-1
#44 Sharath Kamal Achanta (IND) def. #35 Simon Gauzy (FRA) 4-1
#91 Adam Pattantyus (HUN) def. #49 Adrian Crisan (ROU) 4-2
#133 Joao Geraldo (POR) def. #86 Ho Kwan Kit (HKG) 4-3