Agler served as head coach of the Dallas Wings of the Women's National Basketball Association (WNBA) from 2019 to 2020.

He had previously been head coach of the Seattle Storm and the Los Angeles Sparks, each of whom he led to a WNBA championship, in 2010 and 2016, respectively.

During his coaching career, Agler has guided young stars like Candace Parker, Nneka Ogwumike, Alana Beard, Skylar Diggins-Smith, Tayler Hill, Liz Cambage, Megan Gustafson, and Arike Ogunbowale.

Agler attended college at Wittenberg University in Ohio, where he won the 1977 Division III NCAA Championship as a point guard.

[2] As head coach of the Columbus Quest of the American Basketball League, Agler led the team to a combined 82–22 record and two ABL Championships.