Meet 9U Grey Coach Concepcion

Coach Edward Concepcion was born and raised in La Vega, Dominican Republic. Drafted when he was 16 years old, Edward Concepcion pitched in the minors and for the Dominican Republic National Team. He was signed by the San Francisco Giants in December 2005.  He won Bronze with the Dominican Republic in the 2014 Central American and Caribbean Games.

Fun Fact: When he was 16 years old, Concepcion struck out Bryce Harper and Manny Machado.

Meet 10U Black & 13U Grey Coach Vargas

Oscar Vargas's coaching experience includes:

AMDG Baseball Club: 4 years 

Boys and Girls Club RBI program- 2 years 

Tempe South Little League- 2 years

St.Agnes League - 1 year

Meet 10U Grey Coach Ramon

Coach Ramon was a four-year varsity starter who was named all-conference in each of those years. He is the only player from Combs High School to ever sign to play college baseball. Coach Ramon played at Benedictine UniversityMesa here in the valley. He has helped coach baseball since the age of 16 and has been a mentor to younger players, many of whom were able to go on to play at the college level. Coach Ramon is deeply committed to the values of respect and accountability.

Coach Ramon leads by example with teammates, opponents, and fans with unwavering respect, and integrity. His approach to the game emphasizes personal responsibility, teamwork, and a strong work ethic, setting a standard for excellence that extends beyond the diamond. As a role model and mentor, Ramon advocates for fostering a positive environment where respect and accountability are the cornerstones of success, both in baseball and in life.

Meet 10U Grey Coach Julian

Coach Julian Dominguez grew up in Ontario, California. He was first introduced to the game of baseball after moving to Arizona where he began his high school career. As a four-year starter,  he was always self-driven to help motivate others to become better players on and off the field.

Transitioning from playing baseball to coaching is a fulfilling journey that allows former players to share their passion and knowledge of the game with the next generation. It’s an opportunity to influence young athletes, helping them develop their skills, sportsmanship, and understanding of the sport. As a coach, the focus shifts from personal achievement to nurturing talent, fostering teamwork, and creating a positive environment where players can thrive. This transition not only deepens one’s love for baseball but also builds lasting relationships and impacts the lives of young players both on and off the field. Teaching young kids about sports is an incredibly exciting experience! It’s a wonderful opportunity to instill not only fundamental skills but also important values like teamwork, discipline, and perseverance. Watching their enthusiasm as they learn new games, celebrate victories, and navigate challenges is truly rewarding. Each moment spent on the field or court fosters a love for physical activity and creates lifelong memories, making it a joyous journey for both the young athletes and their coaches.

Meet 11U Black Coach Buck

Cole Buchda was born and raised in Phoenix, Arizona. He played four years of Varsity Baseball at Sunnyslope High School as a pitcher. In 2020 he graduated from Arizona State University with a Bachelor's degree. Since 2017, he has been coaching at Sunnyslope High School as the Head Freshman Coach, and in 2024 has joined the Varsity staff as an Assistant Coach. He has been a part of the AMDG Baseball Club for three years and counting. In 2022,  his 13U AAA team finished number one in the state and nation in USSSA rankings. Coach Buck married his college sweetheart during last year's season and they are expecting their first son in October.

Meet 11U Grey Coach Cody

Cody Buchda was born and raised in Phoenix, Arizona. He attended Sunnyslope High School. During his high school career, he played three years of varsity baseball as a catcher and outfielder, as well as three years of varsity football. During the 2011-2012 season Cody's baseball team won the Division II State Championship against Liberty High School and he was awarded All-Section First Team as a designated hitter.

Meet 12U Black & 14U Grey Coach Nunez

Coach Michael Nunez is a born and raised Phoenician. His parochial education began at St. Agnes then he transitioned to St. Mary’s High School. After transferring to a few schools to play baseball, he ultimately received his undergraduate degree from Grand Canyon University in Business Administration with a focus in Communication.

Coach Nunez’s playing experience is as follows: First Team All-State, First Team All-Region Junior(2005) and Senior (2006), Juco All-Star game (Chandler-Gilbert Community College), Colt 45’s Collegiate and the Freedom Pro Baseball league. Coach Nunez had the opportunity to sign as a free agent with the Los Angeles Angels Organization, but ultimately had his son Joseph and chose to focus on raising him.

Coach Nunez’s coaching resume stretches back to 2012 when he began coaching at Trivium
Charter Preparatory, where in his inaugural year, they won the CAA Championship. While at
Trivium, Michael coached the AZ Fire Club team and conducted private pitching lessons. In
2015, Joseph Ponce offered Coach Nunez the opportunity to coach at his alma mater St. Mary’s
as the head Junior Varsity coach. After one year, he moved from coaching JV to the Varsity Pitching coach where he would stay for the next three years. During that time, he was also coaching with the ATB Club and the Angels High School Scout team. After his tenure at St.Mary’s, he was offered the opportunity to move from the 4A to 5A AIA Division and join the Cactus Shadows High School team as the Varsity Pitching Coach in 2019. Yet again, after one year with Cactus Shadows in 2020, Coach Nunez received the opportunity to coach with Brophy College Preparatory (BCP) which allowed for more growth from the 5A to 6A Premier AIA Division. He is proud to say this is his fourth year with BCP and the pitching staff has seen year- over-year improvements. This ultimately contributed to BCP’s success in making the postseason for the first time in 10 years. During his tenure with BCP, he has continued his private pitching lessons and joined the AMDG organization. This year he will continue as the BCP Varsity Pitching Coach and head coach for both AMDG 14U AAA and 12U AAA.

All in all, Coach Nunez has worked diligently to be both a man for others as well as help young adults strengthen their skill set and mentality through baseball. He is also a family man with a Fiancee (Mirella) and two sons Joseph (Joey, 15) and Sebastian (2 months) whom you may see at his games supporting the AMDG Family.

Overview Coaching Experience
Trivium Prep Head Coach: 2013-2016 11u-14u
AZ Fire Head Coach/ Owner: 14u-16u
Arizona Diamondback Academy Camp Coach: 2015-2019
St. Mary’s High School Head JV Coach/ Head Varsity Pitching Coach 2016-2020
Los Angeles Scout Team Pitching Coach 2015-2019 14u-17u
ATB: 2016-2020 Head Coach 12u-14u 18u
Cactus Shadows Pitching Coach 2021-2021 16u-18u
Brophy Head Varsity Pitching Coach 2021-Present All Levels in the Fall Varsity in the Spring
AMDG Head Coach 2021-Present 11u, 12u, 13u, 14u

Pitching Clients: Pro-College-9u I train all levels and backgrounds. 20 clients year-round.

Fun Facts
Coach Nunez, is ambidextrous he can throw with both arms.
Dominantly left-handed Coach Nunez taught himself how to throw right-handed in the chase of wanting to play shortstop like Alex Rodriguez. Coach Nunez was able to get free braces for training a player in pitching.

Coaching Philosophy
It’s not how you start, it's how you finish. I am a firm believer in what you put in you’ll get out. Baseball is a tool that can change your life forever. What you use it for is up to you. My coaching style is positive reinforcement first and foremost. Patience versus results.

Meet Director of Strength & Conditioning and 12U Grey Coach Nate

Nate Hillerman was born and raised in Washington, Missouri. He attended St. Louis Community College for two years and finished his undergraduate degree at Lindenwood University in Saint Charles, Missouri. He played baseball all four years and graduated at the top of his class academically.

With his degree in Exercise Science, he completed two internships and has four years of experience coaching strength and conditioning for youth through professional athletes.

Meet 13U Black Coach Grove

Coach Matt Grove attended high school Benson Polytechnic High School in Portland, Oregon. He was the 2000 All-City Selection for Pitcher. He attended college at Concordia University (NAIA) and was a pitcher for three years (2002-2004). He played on the first team in school history to make it to the NAIA World Series in 2004. Coach Grove has a bachelor's and two master's degrees from Concordia and Grand Canyon University. He has taught junior high physical education in Alhambra School District since 2006.

Coach Grove coached at various high schools from 2006-2016 (Phoenix Christian, Maryvale, and Lincoln in Oregon) with most of his focus on pitching. He stepped away to coach his son's teams. Coach Grove has coached with AMDG Baseball Club since 2019. He is on his second round of teams with AMDG. His first team finished with a four-year record of 144-80-10 and was the first AMDG team to gain a majors classification. Coach Grove also conducts pitching lessons at the SFXAA facility.

Meet 13U Grey Coach Alan

Born and raised in Jenison, Michigan, Alan Jollineau developed a passion for sports early on, excelling in both varsity baseball and varsity hockey. His dedication and skill on the field earned him titles including all-conference and all-district shortstop during his senior year of high school.

After graduating high school, he moved to Arizona to pursue higher education and new opportunities. He graduated from Arizona State University with a Bachelor of Science in Technology Entrepreneurship and Management. This academic background has been instrumental in shaping his approach to coaching and leadership. For the past decade, he has been dedicated to coaching youth sports, including baseball, softball, football, and soccer.

Currently, he is proud to serve as the head coach of the St. Francis Xavier School Baseball team. As a long-time member of the St. Francis Parish Community, he brings a strong focus on the foundational values of the AMDG organization. His coaching philosophy centers around the belief that the primary duty of a youth coach is to build a child's confidence. He firmly believes that with self-confidence, all other measures of success will naturally follow. This confidence is a valuable trait that players can carry with them throughout their lives, helping them to achieve their goals both on and off the field.

Meet 14U Grey Assistant Coach Collin

Collin Cummings pitched at Scottsdale Community College for two years and played high school baseball at Cactus Shadow. He is now pursuing his Bachelor's Degree as an honors student in Kinesiology at Arizona State University, while working towards his doctorate in Physical Therapy.

Collin has coached with AMDG Baseball Club since 2023 and coaches high school baseball at Cactus Shadows. His goal with coaching is to, first, teach kids lessons about life, how to manage their health and stress, and a little baseball along the way. He pursues the development of each player so they progress as a human being and a baseball player. He believes that a group of outstanding people and baseball players makes a great team. Coach Collin puts all of his care and time into his players so they can develop for the future.