The USA Baseball Collegiate National Team announced the coaching staff for their training camp for Team Stars and Team Stripes on June 16.
Collegiate National Team/Stars Staff:
Andy Stankiewicz – Manager
Rusty Filter – Pitching Coach
Don Wakamatsu – Bench/Hitting Coach
Omar Johnson – First Base Coach
Bill Mosiello – Third Base Coach
Carlos Muñoz – Bullpen Coach
Collegiate National Team Prospects/Stripes Staff:
Jonathan Hernandez – Manager
LaTroy Hawkins – Pitching Coach
Dan Hartleb – Bench/Hitting Coach
Michael Choice – First Base Coach
Dave Tollett – Third Base Coach
Butch Chaffin – Assistant Coach
Joe McGowan – Bullpen Catcher
Our Training Camp staff is SET 🇺🇸
The Stars staff will guide Team USA in the 45th USA vs. Japan Collegiate All-Star Championship Series. The Stripes staff will lead the Collegiate National Team Prospects in a 4th of July Game vs. the Appy League Select Team.… pic.twitter.com/be4eHHeBhe
— USA Baseball CNT (@USABaseballCNT) June 16, 2025
USA Baseball announced on April 1 that Andy Stankiewicz will manage the 2025 Collegiate National Team for its international series against Japan’s Collegiate All-Star Team this summer. The series will take place from July 8–13 across multiple venues in Japan.
“We are looking forward to welcoming Andy back to manage this year’s Collegiate National Team,” said Eric Campbell, USA Baseball’s General Manager of Collegiate and Professional National Teams, in the organization’s official announcement. “He has had a lot of success not just at the collegiate level, but also with Team USA, and he knows what it takes to win on the international stage. We are confident that Andy will guide our team to a great deal of success while providing unparalleled guidance to the top non-draft eligible players in the country.”
Source: USA Baseball
The final roster will be selected following the annual Stars vs. Stripes series, scheduled for June 29 through July 3 at venues across North Carolina. Select players may also be chosen to compete in a Fourth of July game against the Appalachian League Select Team in Kannapolis, North Carolina.
Stankiewicz will have Rusty Filter as his pitching coach, Omar Johnson as the first base coach, Bill Mosiello as the third base coach, Carlos Muñoz as the bullpen coach, and Don Wakamatsu as the bench/hitting coach. They will coach the Stars Team at the Collegiate National Team Training Camp and the squad that will compete in the 45th USA vs. Japan Collegiate All-Star Series.
Brad Brown is also on the Collegiate National Team coaching staff as the video and data analyst and currently holds this position with Oregon State’s program.
Filter finished his eighth season as head coach at Santa Clara, and the 2025 season marked Stankiewicz’s third season at the University of Southern California.
Stankiewicz returns to USA Baseball for the fifth time as a coach. Johnson recently wrapped up his 18th season with Jackson State’s program.
Mosiello is the associate head coach at TCU and helped the program reach the NCAA Regional in the first season of his second stint in Fort Worth, Texas.
Wakamatsu held managerial positions with the Seattle Mariners from 2009–10 and with the Texas Rangers in 2018.
Wakamatsu also held coaching positions with the Kansas City Royals from 2014–17, helping them win their second World Series title in 2015. He also held roles with the Rangers from 2003–07, the Oakland Athletics in 2008, the Toronto Blue Jays from 2011–12, and returned to Texas from 2018–21.
Wakamatsu currently serves as the Executive Vice President of the Oakland Ballers in the Pioneer League.
For the 2025 season, Filter and Wakamatsu will be coaching with the USA Baseball National Team for the first time.
Johnson will return with USA Baseball, having coached at the 2023 Collegiate National Team Training Camp. Mosiello was on the 2017 U18 National Team staff.
For the rest of the 2025 USA Baseball Collegiate National Team season, Jonathan Hernandez will manage the Stripes Team and the Collegiate National Team Prospects squad.
Hernandez’s coaching staff will consist of Butch Chaffin as the assistant coach, Michael Choice as the first base coach, Dan Hartleb as the bench/hitting coach, LaTroy Hawkins as the pitching coach, Joe McGowan as the bullpen catcher, and Dave Tollett as the third base coach.
Hernandez has been the head coach at Bethune-Cookman since 2019.
Hartleb finished his 20th season as head coach at the University of Illinois.
Tollett completed his 23rd season as head coach at Florida Gulf Coast University.
Hartleb, Hernandez, and Tollett have a combined 1,523 wins as head coaches.
Hernandez and Tollett will be making their coaching debuts with USA Baseball, while Hartleb was a coach for the Collegiate National Team in 2021.
Chaffin was an assistant coach with the U18 National Team in 2010 and 2023, and with the U12 National Team that won a gold medal at the IV World Baseball Softball Confederation U12 World Cup in 2017.
Hawkins pitched 21 seasons in Major League Baseball with the Minnesota Twins (1995–2003), Chicago Cubs (2004–05), San Francisco Giants (2005), Baltimore Orioles (2006), Colorado Rockies (2007, 2014–15), New York Yankees (2008), Houston Astros (2008–09), Milwaukee Brewers (2010–11), Los Angeles Angels of Anaheim (2012), New York Mets (2013), and Toronto Blue Jays (2015).
Hawkins also played in the 2009 World Baseball Classic with the United States, appearing in four relief outings and allowing three earned runs in 3.2 innings while going 1–0.
His accolades include serving as a long-time coach at events hosted by MLB and USA Baseball, including the Breakthrough Series, DREAM Series, and Hank Aaron Invitational. He was also pitching coach at the 2022 Prospect Development Pipeline League and hosted the USA Baseball “Introduction to Pitch Smart” course.
Hawkins currently works as a special assistant in the baseball operations department for the Twins and occasionally serves as an analyst for team broadcasts on Bally Sports North.
Choice played on the 2009 USA Collegiate National Team and spent three seasons in the majors with Oakland in 2013 and Texas from 2013–14.
He also played 12 professional seasons across the minors, majors, independent leagues, Korean Baseball Organization, Liga Mexicana de Beisbol, and Liga ARCO Mexicana del Pacífico from 2010–22.
In 2023, Choice joined MLB’s Diversity Pipeline Scout and Coaching Development Program, which aims to increase the representation of underrepresented groups in professional baseball scouting and coaching roles. He has been a scout for the Orioles since October and previously served as a developmental scout for the Tampa Bay Rays prior to joining USA Baseball.
