Ryan Duffy graduated in 2000 from Saint Francis High School and won 2 CCS championships ('98-'99) under Terry O'Donnell. He played club for the Stanford Water Polo Foundation and earned the opportunity to travel and play throughout Europe, and learn from many fantastic coaches. He moved to Bend, Oregon, in 2002, and in 2005-2006 he helped start water polo programs at three different high schools.

Since 2006, Ryan has been the Head Coach at Mountain View High School with the goal of not only winning but to create a water polo culture and community. Through immense adversity and despite years of losses, forfeited matches, and even making homemade cages, water polo began to flourish in Central Oregon and is now more popular than ever. In 2012 and 2017, Ryan led the Mountain View boys to an Oregon 5A State Championships 4th place finish. Duffy was victorious on three occasions, winning the Oregon 5A State Championship title in 2013, 2015, and 2016. He led the Mountain View girls to an Oregon 5A State Runner-up finish in 2015.

In 2018, Duffy was hired as the Head Coach of the Bend Waves Water Polo Club. At the Bend Waves, he works with other great coaches to help continue the growth of the sport in Central Oregon. Ryan lives in Bend, OR with his wife Brandy and their three boys; Parker, 11, Merit, 7, and Harlan, 3. When he is not on deck, they enjoy fishing, camping, swimming, and working on their little farm with their puppy.

2019 USA Water Polo—Bill Barnett Distinguished Men's Coaching Award recipient.