After a slow start, Hermann became a very important defensive member, often partnering legendary Miroslav Votava in central midfield. In the 1987–88 season, he played in 30 matches (receiving only one yellow card), as Werder won the national championship after 23 years. As his presence was diminishing he still appeared in six matches during the club's 1991–92 Cup Winners' Cup victorious campaign, although he did not play in the final.