Coaches & Directors
Coaching Staff

Ray Onisko

Head Coach


Coach Ray has been involved in competitive swimming for 40 years, 13 years as a swimmer and the past 27 years as a coach. Ray has coached/taught all levels of swimming from the learn to swim beginner, senior development swimmers, high school swimmers as well as collegiate (swimmers that have attended St. Bonaventure University, Oakland University, Eastern Michigan and Miami of Ohio to name a few) and master level athletes.  As an ASCA level 3 certified coach, Ray has had numerous Junior and Senior National Qualifiers, High School State Champions and All-Americans, as well as assisting in the development of Olympic Trial Qualifiers. Coach Ray has also seen numerous former swimmers go on to become successful coaches in both the USA swimming ranks as well as the High School swimming ranks.  Ray believes the foundation of every successful swimmer begins with strong fundamentals coupled with age appropriate training both in water (based upon an IM base) and dryland.  Proper mechanics lead to good "swimmer" health where all energy systems can be challenged in a creative way.  Swimming is challenging but there is always a way to have fun while working hard.  


The past 3 years while at Liquid Lightning, they had numerous Junior National Qualifiers (both NCSA and Speedo Juniors) with a relay placing 5th at the NCSA Junior National meet.  As a High School Coach, won three consecutive county (Dakota) titles as well as two consecutive division (Dakota) titles in Macomb County.  Between Eisenhower and Dakota, produced 3 swimmer of the year recipients and countless first team and dream team Macomb County swim team members.  On the club ranks, guided teams to numerous top 3 State meet finishes for both the 12 and under as well as Open Championship meets.  Guided the BBA girl’s squad to a Sectional Championship in Wisconsin; served as zone coach for team Michigan in 2000.  Ray has also served on the Michigan Board of Directors, been a delegate to the USA swimming convention and attend yearly clinics as he believes, the better (and continued)educated he is, the better coach to the swimmers he will continue to be.

The Gators are excited to have Coach Ray, his wife Brianna and their two daughters join the Gator Family and Greenwood Community.

Kristen Nunnelly

Senior/Junior Coach


Kristen is in her sixth season with the Gators. She has always loved the water and enjoys sharing and fostering that same love with the young swimmers she works with on the team.
Kristen swam on Center Grove Aquatic Club growing up and later competed on the Center Grove high school team.  She was a part of the IHSAA state runner-up squad in 2010 as well as capturing an individual runner-up state title in the 500 freestyle the year before for Center Grove High School.  Throughout her swimming career Kristen was selected for various prestigious camps, one being the national select camp at the Olympic Training Center in Colorado Springs.
She went on to compete collegiately at the University of Toledo and later transferring to Western Kentucky University. 
Kristen is in school currently at IUPUI and pursuing a degree in Spanish. She has a passion for movement and plans to become a certified yoga instructor in the near future.  Kristen hopes that her swimmers continue to have fun, swim fast and keep developing life skills to be successful in and out of the water.  

Anne Graves

Head Junior Coach


Coach Anne is our Head Junior Coach.  She has been swimming and running since she was 8 years old when she joined the Cozad Eustice Swim Team in Cozad, Nebraska.  She swam for 10 years with CESC and USA Swimming when she ran  for Wayne State College in Cross Country, Indoor, and Outdoor Track.  

Anne has her Bachelors and Master’s Degrees in Exercise Science.  She has 16 years of coaching experience, both in age group swimming and lesson instruction.  She is a ASCA level 1 coach and has spent 6 years coaching with South Side Indy Aquatics.  

Swimming is a family affair for the Graves.  Anne's husband Jeremy was also a swimmer and they have 2 children who share their love for swimming. They are excited to start their third season with the Greenwood Gators.

Guy Ruble

Head Developmental Coach


Coach Guy enjoys coaching and encouraging our Gators as they begin their swimming careers in the Developmental Group. He has been involved with competitive swimming for his entire life.  Growing up, Guy was an age-group swimmer on the east side of Indianapolis at the Miramar Club before joining the Warrior Swim Club.  He was a 4-year member of the varsity swim team at Warren Central High School from 1984—1987, serving as team captain his senior year. During his time at Warren Central, their team captured the Marion County Championship from 1985—1987; the Sectional Championship from 1984—1987; and was the State Runner-Up in 1985. Individually, Coach Guy was a state qualifier and finalist in the 100 Back from 1985—1987 and was the backstroker in the 1985 Boys Medley Relay team that won the IHSAA State Championship, setting a new Warren Central High School record which still stands today. (Really!)  He was a First Team All-American for his part in the 1985 and 1986 Medley Relay teams and an Academic All-American athlete in 1987. After high school, Guy attended Purdue University School of Pharmacy, where he obtained his Doctor of Pharmacy in 2005.  He currently works at Eli Lilly and Company in oncology clinical research, developing innovative medicines to treat cancer.  Guy began teaching swimming in high school and started coaching with the Gators in 2014.  Guy and his wife, Heather, home school their four children, whom all swim for the Gators.

Lucas Kovacs

Junior/Developmental Coach


Brooke Thompson

Junior Coach


Board of Directors

Adam Nuhfer



Dana Peckinpaugh

Team Coordinator


Stephanie Kenworthy

Meet Director


Amy Weaver



Tracy Johnson



Jenni Sheets

Swim Lesson Coordinator


Brian Ford

Safe Sport Coordinator


Mandy Solomon

Developmental Parent Rep


Sue Bentz

Junior Parent Rep


Heather Ruble

Senior Parent Rep