Coaches

	Krista Klein – Krista started the club in 1993 and developed it from a learn-to-dive lesson program to one of the top programs in the country. Krista was an accomplished diver and won the USA Diving Nationals multiple times and was also a two-time NCAA Division 1 champion and 1991 NCAA Divers of the year. She was inducted into the Southern Methodist University (SMU) athletic Hall of Fame. She represented the USA in international competitions as part of the US National team. She is the owner of GC Divers, and she coaches, schedules, and manages the program.
	Justin Ruszkowski – Justin Is our Elite team coach. He studied under GC Diver Olympic coach Jeff Bro. Justin was a club coach in Lubbock before moving to GC Divers. Justin is the high school coach for the Keller school district and assistant pool manager at the Keller facility. He has an enthusiasm for the sport, an eye for details and a very professional attitude.
	Greg Triefenbach – Greg is our national team coach. Greg is a high-level coach who has coached at multiple Universities over the course of his 30 years as a coach. He was head coach at the University of Missouri, Virginia Tech and St Louis University. He was Big 12 coach of the year. He ran his own club program in Missouri before switching to becoming a college judge and home builder and General contractor. We were able to get him back into a coaching role in our program in Oct of 2025. As a diver, Greg was a two-time world team member for the USA and NCAA All American.
	Ila Castille– Ila has been coaching for 19 years and has been the Coach of the AAU National Championship Team for 8 of those years. She relocated from Crown Valley Divers in California in 2015 to join GC Divers. Ila enjoys working with the younger divers developing their skills and love for the sport. She is Ida’s granddaughter and Krista’s niece.
	Carson Klein– Carson is Krista’s son and he was a part of GC Divers as a young athlete. He was a scholarship swimmer at SMU. Carson has a gift for coaching, and he is able to get the best out of his athletes. Carson is trained in belt spotting on the trampoline and dry board. By utilizing these skills, he is able to take new divers from the beginning of the sport all the way to the national level.
	John David Spence- John David (JD) grew up as a member of GC Divers. He went on to dive for Missouri State and graduated in spring 2023. He joined GC Divers as a coach the fall of 2023. JD has a passion for coaching and lots of energy and enthusiasm. He is trained in belt spotting on both trampoline and dry board. He has had AAU national finalist.


Part time lesson coaches
	Reese -Reese was a former gymnast turned diver. She is in our national team group and works with our lesson divers at the Southlake pool. Reese is currently on the Southlake Carroll high school team.
	Claire – Claire is a current member of our national team. She has been on the national team for over 6 years. Claire works with our lesson divers at the Keller pool. She is headed to the Airforce Academy this June.
	Quentin – Quentin dives with our national training group. He is a Soph in high school and trains with coach Greg. He started coaching in early 2026 and he has a great personality for it.