Eric Greening, Owner Baseball/Fastpitch Instructor

Eric Greening, Owner Baseball/Fastpitch Instructor

Baseball/Softball Instructors


Owner/ Lead Hitting Instructor/ThunderJaxx General Manager & Coach


Eric Greening began his college career in Junior College at Ellsworth College in Iowa Falls, IA on athletic scholarship before transferring to the University of Wisconsin-Whitewater in 2002 which has risen to be one of the top Division III programs in the country.  During his ball-playing years at UWW, the team continued to be ranked on a national level and succeeded in claiming the National Championship in 2005 following a third place finish in the previous season at the National Championships.

After his playing career was over, John Vodenlich, 2005 “National Coach of the Year” selected Eric, then 22, as a student assistant coach. During the summer he added to his coaching experience by being selected as the head coach of the Wisconsin Rivercats, a 12-year-old All-Star traveling team based in southern Wisconsin and additionally, began giving private hitting lessons for ballplayers ages 12 to 14. 

Upon returning to Whitewater for his final year of studies, he was hired to be the Head Coach of the High School Junior Varsity team, riddled with freshmen and sophomores, at Edgerton, WI.  With hitting performance being a major objective of Coach Greening, the JV team achieved an impressive 19-0 record with a number of games being determined by the 10-run rule.

 In receiving his Bachelor of Science degree in Health & Human Performance with a minor in Coaching in 2007, he completed his internship at Langlade Memorial Hospital under Strength & Conditioning Specialist, Greg Renfro.  During the internship, he ran the SportFit training program, which included a study on acceleration times in the 40-yard sprint; created and ran a 6-week plyometric camp; and conducted a 6-week speed camp. 

Upon graduation, Eric’s passion for the game of baseball and softball led him to Play Ball USA where he was hired to create detailed, sport-specific, customized fitness and training programs for individuals of all ages looking to take their game to the next level.  PlayBall USA is a premier indoor baseball/softball academy in the Chicago area that has experienced exponential growth under the leadership of former professional baseball player Nelson Gord.  After being promoted to Facility Coordinator, Eric decided it was the right time to pursue his lifelong career goal to move his experience and expertise back to the North Central Wisconsin area where he had started his baseball experience.  Eric’s motivation is based on the term “you don’t lose north” and his desire to change the perception of southern teams’ dominance.

In the summer of 2010, Eric was named an Assistant Coach for the Wisconsin Woodchucks. During his time working with the hitters and outfielders, Eric worked with multiple high level college players as well as many who went on to play professional baseball with the Toronto Blue Jays, San Diego Padres, Cincinnati Reds, Miami Marlins, Philadelphia Phillies, among others.

Gregg Langbehn, Baseball Pitching Instructor

Gregg Langbehn, Baseball Pitching Instructor

Gregg Langbehn

Baseball Pitching Instructor

Drafted by the New York Mets in the 11th round of the 1988 MLB draft out of D. C. Everest High School, Gregg pitched for eight seasons (1988-1995) in the Minors, including three seasons at the AAA level. He ended his career with 403 strikeouts in 547 1/3 innings pitched with a career ERA of 3.32. He won at least 10 games three times during his four year stint as a starting pitcher.

Gregg spent 10 seasons (1999-2008) with the Houston Astros Player Development System, working in various capacities.  He served as a pitching coach for two seasons, hitting coach for three seasons and managed for five seasons.   He spent at least one season at every level of the Astros Minor League affiliates.  While managing in the New York Penn League from 2004-2006 he guided the team to two Stedler Division Championships, advancing to the league finals both times.  

Additionally, following the 2005 season, he joined the Houston Astros Major League staff for 10 days in September as the Astros made their only World Series appearance. As a result, he received a National League Championship Series ring. 

Gregg was inducted into the Central Wisconsin Baseball Hall of Fame in 2005.

From 2009-2013 Gregg managed the Traverse City (Michigan) Beach Bums, an independent professional team in the Frontier League. During his five seasons, the Beach Bums made the playoffs three times, including a League Finals appearance in 2010, which was the Bums first ever post-season. 

He was named Manager of the Year after the 2012 season after guiding the team to a 64-32 record during the regular season. 

Gregg spent the 2014-2015 seasons with the Cleveland Indians Major League team, working as their Instant Replay Coordinator. Additional duties included assisting the Major League staff on a daily basis with all early work on the field, throwing batting practice, hitting ground balls or taking throws from the infielders and outfielders. 

In December of 2015 Gregg agreed to become the manager of the Washington (PA) Wild Things, an independent professional baseball team in the Frontier League. The 2016 season will be Gregg's 26th year in professional baseball.

Gregg resides in Rothschild with his wife Shelly.  They have a nine year old son Nathan and a five year old daughter Rayna. 

John Roberts, Baseball Pitching & Hitting Instructor

John Roberts, Baseball Pitching & Hitting Instructor

John Roberts

Baseball Pitching/Hitting Instructor

John Roberts graduated from Wausau West High School in 2011. He was named Wisconsin AAA legion Pitcher of the Year (2010). After high school, John went on to play at Iowa Western Community College and was a part of the 2012 Junior College National Championship team. After playing 2 years at Iowa Western, John transferred to DII Wayne State College in Wayne, NE. In the 2015 season at Wayne State College, John recorded a .407 batting average with 7 HR’s in 120 AB’s and a 4.08 ERA and 24 SO in 30 innings. Throughout college John played in the Northwoods league for the Wisconsin Woodchucks. (2012-2014)

After college, John moved back to Wausau and is currently teaching Physical Education at Newman Catholic High School and is the head baseball coach.

Stacey Marcum, Lead Fastpitch Instructor

Stacey Marcum, Lead Fastpitch Instructor

Stacey Marcum

Softball Hitting & Pitching Instructor

Stacey is a 2009 graduate of Merrill High School, in Merrill, WI.  During her time at Merrill High School she played on the varsity squad as a pitcher and utility player.  With much pitching and hitting success, Stacey was named the Great Northern Conference Player of the Year and was a unanimous vote for First Team Utility Player her senior year.  

After graduation, Stacey went on to play at the University of Minnesota, Crookston (2009-2013) as a pitcher. She has played in one of the most competitive Division II Conferences (NCAA) in the Northern Sun Intercollegiate Conference with schools based in Minnesota, North Dakota, South Dakota, Nebraska and Iowa.  After becoming a starting pitcher her freshman year, she also played a vital role in the heart of the batting line up as well.  She graduated with a Bachelor’s degree in Communication with an emphasis in Sport Marketing

Stacey was nominated to play for the USA Athletes International program where she was a member of the softball team who represented Team USA, in Australia, in the summer of 2013. She was a pitcher and a catcher for that team who played at the Olympic Stadium in Sydney, Australia.

In 2014, Stacey went to graduate school to pursue a Master’s degree in Kinesiology and Sport Studies at East Tennessee State University (ETSU).  She was a graduate assistant for athletic academics and interned for the ETSU softball team (Division I, Southern Conference) helping with bullpen and hitting sessions for the past two seasons.  She has also taught softball skills for RBI Tri-Cities camps in Johnson City, TN.

Zach Wendorf, Baseball Pitching Instructor

Zach Wendorf, Baseball Pitching Instructor

Zach wendorf

Baseball Pitching Instructor

Zach Wendorf was signed by the Schaumburg Boomers out of the California Winter League in January of 2015. The 6’5” lefty from the University of Wisconsin – Stevens Point finished his senior season with a 2-1 record and 4.98 ERA in 10 appearances out of the bullpen. The 23-year-old from Pine River, Wisconsin, struck out 27 in 34 innings for the Pointers in 2014, adding one save.

In 2015 with the Florence Freedom, Zach went 2-1 with a 2.94 ERA in 10 appearances and 5 starts. In 36.2 innings, he struck out 33 while only walking 20.  

Blu Anderson

Personal Trainer & Youth Baseball Instructor

Hello there! My name is Blu Ryleigh Anderson! I currently play baseball in thee Badger Amateur Baseball Association right in my small hometown of Wittenberg, Wisconsin. I have played and been around the game my whole life and have always had a sincere passion for participating in the sport in any way possible! I have played in the B.A.B.A since I was 15 and been on my hometown team the Wittenberg Pilots for my whole baseball career! I played as a catcher my whole life until I got older and started to progress as a player and grow as an individual. I currently play right field for the Pilots but can start virtually anywhere else my team needs me to play or where I can help and benefit the team most.

As well as playing baseball, I began to develop a love and passion for football. After high school I jumped straight into the world of Semi-Pro football playing my first 3 years right here in Wausau for the very successful Central Wisconsin Spartans. When the Spartans ended their team, I took my talents to Appleton to play for the Wisconsin Ravens where I currently play as the starting middle linebacker. These past two years have been my most successful ever as I made the league’s all-star team in back to back seasons.

Along the way I developed a passion for fitness and working out. Sports and fitness go hand in hand so after high school I started to volunteer with students at my old high school training them and working out with classes of multiple students. I still currently do this as well as coach football at the high school and mentor students at the middle school in Wittenberg. In the spring of 2017 I started online schooling through the International Sports Science Association or ISSA to become a personal trainer! I am currently still enrolled in classes and looking to finish and close it out by the end of 2018. I look forward to meeting and working with folks and kids from all walks of life!  God Bless!

Jerry Pagel, Fastpitch/Baseball Hitting Instructor

Jerry Pagel, Fastpitch/Baseball Hitting Instructor

jerry pagel

Youth Baseball/Softball Hitting Instructor

A 1982 D.C. Everest graduate, Jerry is married with 3 children and resides in Kronenwetter. 

Jerry has coached both baseball and softball for over 20 years at all levels of skill and competitiveness. Teams coached include ThunderJaxx Fastpitch (ASA), Badger Blitz Fastpitch (ASA), Fire Pro Fastpitch (ASA), D.C. Everest Baseball, and D.C. Everest Softball, where his team advanced to the Babe Ruth League World Series in North Carolina and placed in the top 10 teams in the nation.

Across his coaching career, Jerry has coached numerous players who have gone on to both play at the college level and becomes coaches themselves. Working with youth to make them better players and teammates is something that Jerry takes great pride in, and he looks forward to continuing to do so with the athletes at the Academy.

Charlie Hessil

Baseball/Softball Hitting/Catching Instructor

Charlie Hessil, a Wausau West graduate of 2015, played four years of both baseball and soccer. He played one season with the Thunderjaxx in the fall of 2013 and summer of 2014. 

He spent three summers playing American Legion Baseball (2014-2016) with the Wausau Post 10 Bulldogs.  He played his two seasons of varsity baseball at Wausau West under Head Coach Eric Greening in 2014 and 2015.  In Charlie’s senior season he was the epitome of a utility player making an appearance at every position, except centerfield, in a conference game.  He was fifth in the conference in batting with a .421 BA in 38 AB.  He also led the team in multiple hitting categories including hits (16), doubles (3), and RBI (9). 

 After high school Charlie went on to play one year of college baseball at Lackawanna College, a D-II Junior College located in Scranton, Pennsylvania.  He played in 30 games with the Falcons hitting .264 in 53 at-bats.  He contributed offensively by hitting 2 home runs, driving in 10, scoring 9, and stealing 4 bases. 

 Charlie is currently enrolled in the Criminal Justice Program at Northcentral Technical College with hopes of becoming a Law Enforcement Officer in the near future.  During his free time he enjoys hunting, disc golf, playing sports, and basically anything outdoors.

Justin Berg, Pitching Camp Instructor

Justin Berg, Pitching Camp Instructor


Camp Instructor

After getting called up to the Chicago Cubs late in the year, Justin proved he deserved to stay. In his first year as a Major League pitcher, Justin was one of the most dependable arms coming out of the Cubs bullpen appearing in 11 games, giving up only 1 run, striking out 7, while facing some of the best hitters in the world, including the 2009 World Series participant, Philadelphia Phillies.

* Acquired by the Chicago Cubs from the New York Yankees for OF Matt Lawton on Aug. 26, 2005.
* Originally selected by the Yankees in the 43rd round of the 2003 First-Year Player Draft out of Triton (River Grove, Ill.) Junior College...scouted by Steve Lerake.
*Justin Berg made his major league debut on April 3rd, 2009 against the New York Yankees at the newly built Yankee Stadium.
*Pitched in 60 games over 3 seasons of Major League Baseball with the Chicago Cubs.