Cori Thiermann became the first head softball coach in Berry College history in June, 2008. In her Berry career, she has accumulated a career record of 236-89 including an 87-13 record in the Southern Athletic Association (SAA).
Under Thiermann's guidance, the Vikings have become one of the top softball programs in the nation. Since 2013, the Vikings have won five consecutive SAA Regular Season Championships, three consecutive SAA Tournament Championships and have advanced to the NCAA Regional Championship each of those three seasons.
Berry has also earned a No. 1 NFCA national ranking, had two NFCA All-Americans, two CoSIDA Academic All-Americans, 46 All-Conference Selections, 72 SAA Academic Honor Roll honorees, six SAA Major Award winners (Player, Picther or Newcomer of the Year) and Thiermann has been named the SAA's Coach of the Year four of the past five seasons. The Vikings also set the program record in 2017 with 40 wins and were a perfect 17-0 in SAA play. In addition, Berry has been selected as an NFCA All-Academic Team each season since 2011 and placed numerous athletes on the NFCA Scholar-Athlete list.
Thiermann came to Berry after two seasons as an assistant coach at Montana State University-Billings, where she finished her master's degree in sports, recreation and fitness management. During her tenure there, the Yellow Jackets posted a 54-45 overall record, including an impressive 26-13 mark in conference play. In 2008, the team went 28-21 and was 16-8 against Great Northwest Athletic Conference opponents.
Thiermann holds a bachelor's degree in both business administration and public administration from the University of Wisconsin - Green Bay, where she played NCAA Division I softball for the Phoenix from 2001-05 and was a four-year Horizon League Honor Roll member. As a senior she was a member of the 2005 team that won the Horizon League championship and advanced to the NCAA Tournament.