Holders Gamba Osaka came from a goal down to move into the third round of the Emperor's Cup with a 5-2 win over Ryutsu Keizai University on Sunday.
Kawasaki Frontale were the day's big winners as Chong Tese grabbed a hat-trick in a 6-1 demolition of non-league Renofa Yamaguchi, but Urawa Reds suffered a massive upset and were the only top-flight team to fall at the first hurdle, going down 2-0 away to regional qualifier Matsumoto Yamaga FC.
At Expo Stadium, Ryuta Hosokai fired Ryutsu into a 19th-minute lead but a fine finish from Hayato Sasaki put Gamba on level terms before Tomokazu Myojin made it 2-1 on 34 minutes, tapping in after Takuya Masuda failed to hold Sasaki's shot.