Coach Deidra Dunn joined her younger sister, Millicent, in the summer of 2006 to take control of the Maryville College men's and women's tennis program. As her sister did, Dunn's tennis career truly began to flourish in her college days at Carson-Newman. There they both took part in student coaching programs where they were able to elevate their knowledge and wisdom of what it takes to effectively coach at the collegiate level. While splitting time with her sister as head coach for Maryville College, she has obtained several awards, such as the GSAC coach of the year on a pair of occasions. Along with seeing her team grow as individuals, she has also seen them grow athletically where she has helped produce numerous all-conference performers. In 14 seasons, the duo boasts the following records:

Overall Record (Men and Women) 130-223-1
Overall GSAC Record (Men and Women) 33-29
Overall USA South Record (Men and Women) 39-99
Men Only Overall Record 40-122-1
Women Only Overall Record 90-101
Men Only GSAC Record 10-16
Women Only GSAC Record 23-13
Men Only USA South Record 6-58
Women Only USA South Record 33-36

Dunn Era:
Womens Tennis:
2006-2007- 8-7 (5-1 GSAC)
2007-2008-
2008-2009- 6-8 (4-1 GSAC)
2009-2010- 7-11 (4-3 GSAC)
2010-2011- 7-7 (5-2 GSAC)
2011-2012- 9-8 (5-6 GSAC)
2012-2013- 10-5 (7-4 USA South)
2013-2014- 7-9 (7-5 USA South)
2014-2015- 8-6 (6-6 USA South)
2015-2016- 8-8 (5-7 USA South)
2016-2017- 3-12 (1-6 USA South)
2017-2018- 7-10 (2-5 USA South)
2018-2019- 8-9 (5-3 USA South) *Qualified for USA South Tournament
2019-2020- 2-1 (0-0 USA South) ^COVID-19 Shortened Season

Mens Tennis:
2006-2007- 5-9 (1-2 GSAC)
2007-2008-
2008-2009- 3-9 (2-1 GSAC)
2009-2010- 10-5 (6-0 GSAC)
2010-2011- 1-10 (1-5 GSAC)
2011-2012- 3-11 (0-8 GSAC)
2012-2013- 0-10 (0-8 USA South)
2013-2014- 0-11 (0-9 USA South)
2014-2015- 4-8 (1-8 USA South)
2015-2016- 4-9-1 (2-8 USA South)
2016-2017- 4-10 (0-8 USA South)
2017-2018- 5-12 (3-6 USA South)
2018-2019- 0-16 (0-11 USA South)
2019-2020- 1-2 (0-0 USA South) ^COVID-19 Shortened Season