Second half highlights:
46th min: Kohfeldt makes a double substitution for Werder at half time. Patrick Erras and Yuya Osako make way for Davy Klaassen and loan-signing Tahith Chong.
48th min: Two huge opportunities for Werder! For the first, the ball is flicked onto the crossbar after a Werder corner. Seconds later, Joshua Sargent is played in brilliantly by Leo Bittencourt but he misplaces his pass, rather than take the shot himself.
49th min: Werder take the lead! Sargent makes up for his error, as he rises above two Jena defenders to head home from an Augustinsson cross.
58th min: Davy Klaassen finds Leo Bittencourt with a perfectly-weighted pass over the top. He hits a scuffed shot on the turn which bounces past the far post, having beaten the keeper. Werder keep pushing for a second.
72nd min: An injury scare for Tahith Chong as he overstretches his left knee going for the ball and falls to the ground. But after a short break and some treatment, the Dutchman is back on his feet and ready to continue.
84th min: Jiri Pavlenka, who has not been called into action for some time, makes a good save. A Jena free kick finds its way through to Rene Eckardt at the back post, but Pavlenka is equal to his effort and parries the ball to safety.
88th min: Werder double the advantage! Tahith Chong finishes well to wrap up the tie after a well-worked attack by SVW.
90th min: Final whistle! Werder advance to the second round of the cup.