Dolphin Sponsors 2019

2019 Rolling Valley Dolphin Coaches



This is your coaching team for the 2019 season.  All the coaches are available for private lessons.  Their contact information is listed below for your convenience.  



Head Coach - Emily Ratzenberger

I am Emily Ratzenberger and I'm so excited to return the Rolling Valley team as the Head Coach! I grew up in Vienna and swam for Cardinal Hill for twelve years including time as a junior coach. I have seven years of coaching experience. I am a sixth grade teacher and have been teaching at Marshall Road Elementary for the last seven years. I am looking forward to a great summer with the Dolphins!

Senior Coaches:



      Andrew Hale


My name is Andrew and I’ve been on the team since I was 8 years old. I also swim club for Mason Makos year round. I have swum for the HS team for 4 years and was captain for 2 years. I have coached the past 3 seasons (2016, 2017 & 2018) at RV and I am looking forward to another season.  I graduated high school in 2018 and went to Shippensburg University where I swam for the Raiders.


Andrew can be reached at 571-835-0822 for private swim lessons.


Elias Griffin

I have been swimming with the Dolphins for seven years and have been a year round swimmer for four years. I also swim with the Junior National Team with the Makos Swim Club at George Mason University. . I enjoy playing the guitar and spending time with friends.

Elias can be reached at 703-317-7896 for private swim lessons.

Junior Coaches:


Sophia Bailey


Hi my name is Sophia Bailey.  I have been swimming on the Rolling Valley Swim Team for 11 years now, and I have been coaching for 3 years. I was a member of the Mason Makos club swim team for 5 years, and I just completed my 4th year as a member of the West Springfield High School swim team. I also worked as a lifeguard at Rolling Valley for the last few summers. After all of my experience through being a preschool teacher at West Springfield for 2 years, I have learned that my love for teaching in combination with my love for swimming has made coaching one of my favorite things to do. I am looking forward to another amazing season with the dolphins!!


Sophia can be reached at 703-405-0735 for private swim lessons.

Arianna Cassella

Hi!  My name is Ariana Cassella. This will be my 12th year swimming for the Rolling Valley Dolphins.  My favorite strokes are Butterfly and freestyle. I also started swimming for the MAKOS Swim Club at George Mason University when I was 7 years old. I am home schooled and have played soccer since I was 5 years old.  I am also a sub lifeguard for Rolling Valley and have been coaching winter swim with the 8 and unders for two years. I am also a babysitter! I am really looking forward to another fun and productive summer season. Go Dolphins!  

Ariana can be reached at 571-286-6226 for private swim lessons.


Chris Jesten

My name is Chris Jesten and I have been swimming with Rolling Valley for 10 years.  When I first started with the Dolphins, it took me one minute and 11 seconds to swim 25 meters.  I now swim with SDS Swim club year round and have made the High School Swim Team every year. Swimming is a life skill and I firmly believe that if you practice and believe you can improve, you will.   I have coached Winter Swim for the Dolphins for the past two seasons and before that I volunteered to get my service hours by coaching our younger swimmers. If you see me in the lifeguard chair at the Rolling Valley Pool, please say Hello.  I have been a lifeguard for two years. I am a lifeguard and a dog sitter and love all music - I even play a few instruments!

Chris can be reached at 703-887-9169 for private swim lessons.


Lars Griffin

My name is Lars Griffin and this is my second year being a Life guard. I go to West Springfield High School where I swim and play lacrosse. Some of my favorite things to do include hanging out with my friends and playing games. One fun fact about me is that I have never met Keanu Reeves.


Lars can be reached at 703-220-8148 for private lessons.



Kateri Kapp

My name is Kateri Kapp and I've been on the swim team for the past 12 years. I've been dancing since I was four and teaching ballet classes for the past two years and I'm super excited to start coaching the pups! I'm a lifeguard at RV so you'll see me at the pool a lot. Can't wait for a fantastic season!!!

Kateri can be reached at 571-210-6613 for private lessons