Tasha Diesselhorst is heading into her tenth season as the head coach for the Northwestern Lady Rangers.
She is the second-winningest coach in program history with 118 wins.
Her teams have reached the GAC tournament 3 out of the last 4 years, with their first ever appearance in the semi-final round during the 2024-2025 season.
During the 2024-2025 season, she notched her 300th career win beating a nationally ranked Harding team on their home floor and ending a 33-game win streak.
The 2023-2024 year, her team set numerous records. Their 24-7 record was a NCAA DII best as well as one of the winningest seasons in program history. The team was ranked as high as #10 nationally. Senior Faith Simpson received GAC Player of the Year, D2CCA Central Region Player of the Year, and D2CCA First-Team All-American honors. She is the first, First-Team All-American in Northwestern’s D2 athletic history.
During her tenure, Diesselhorst has coached 7 All-Conference Selections – 2 First-Team Selections, a Newcomer of the Year, and Player of the Year.
Diesselhorst has had two players sign to play professionally overseas, Scout Frame in Ireland and Faith Simpson in Romania.
She has also coached numerous record holders for the conference and university.
Jade Jones (2016-2019) still holds the GAC single game assist record (15) and Bailey Brown (2017-2022) ranks as the GAC’s 2nd leading all-time scorer (1,911) and 3rd all-time leading rebounder (1,024).
Bailey Brown (2017-2022) is Northwestern’s single game rebound record holder (26), all-time leading rebounder (1,024) and second all-time leading scorer (1,911). Carly Craig (2021-2025) is Northwestern’s career assist record holder (487) and career 3-point record holder (253).
Diesselhorst also takes pride in her team’s academic excellence. They have maintained a 3.5 or better GPA during her tenure with a team best 3.8 in 2024-2025. She has coached over 40 All-Conference Academic selections and well as numerous GAC Distinguished & Elite Scholar Athlete recipients.
Diesselhorst arrived at Northwestern following a nine-year stint at Pond Creek-Hunter where she had tremendous success during her time as the Lady Panthers' head coach. Her team won the Class A state championship in 2014 and finished as the runner-up in 2016. The Lady Panthers also qualified for the state tournament in 2013 and 2015.
From 2010-16, Diesselhorst led the Lady Panthers to seven straight Skeltur Conference Championships, an undefeated record of 49-0 in conference play, and a 170-29 record. During her nine years at PC-H she coached four all-state players and 10 all-conference selections, compiling an overall record of 187-63.
She was selected as the Skeltur Conference Coach of the Year seven times and was named the coach of the year in 2014 by the Enid News and Eagle and CTB Sports. That same year, she also was named the Oklahoma Coaches Association Region I Coach of the Year and the Oklahoma Girls Basketball Coaches Association All-State Coach. The Fellowship of Christian Athletes named her its Northwest Coach of the Year in 2015.
Diesselhorst is a 2006 graduate of Oklahoma Christian University, where she had a stellar career, leading her teams to four straight NAIA National Tournament appearances. She earned 2005 all-American honors and was an All-Sooner Athletic Conference selection in her final three years at OC. She is ranked in the top 10 all-time leading scorers in school history.
Diesselhorst graduated with honors in 2006 with a degree in physical education. She was awarded the President's Medal for having the highest grade point average of the graduating class. She later earned a master's degree from the University of Central Oklahoma.
Diesselhorst comes from a long line of successful coaches. Her father (and current assistant), Randy Turney, was a highly successful basketball coach at several schools in northwest Oklahoma, and coached her at Medford High School. Her grandfather, Bob Kramer was a legendary coach at Balko High School in the Oklahoma Panhandle. Grandfather, Johnny Turney was a state championship coach at Wakita High School. Aunt Kim Kramer was a 4-time state champion coach at Woodward High School.
Diesselhorst and her husband, Adam, currently reside in Enid.
