Big Boss Man: Aaron Bossi named manager of the Renegades

Wappingers Falls, N.Y. (Feb. 5, 2026) – The New York Yankees announced their 2026 player development staffs on Thursday. Aaron Bossi will take over as the manager of the Hudson Valley Renegades, the Yankees’ High-A affiliate.

Bossi becomes the 21^st manager in team history, and sixth in six years during the Yankees era. He replaces James Cooper, who guided the Renegades to a franchise-record 79 wins in 2025 and was named the new manager of the Double-A Somerset Patriots. Under his tutelage the Renegades had their 13^th consecutive winning season, and 16^th in the last 17 seasons. Since the beginning of the 2012 season, the Renegades have the best winning percentage (.577) in Minor League Baseball.

He is joined on the all-new field staff by Pitching Coach Ryan Mossman (1^st season), Hitting Coach Scott Nestor (1^st season), and Defensive Coach Chase Gerbrick (1^st season). The support staff features one returner in Clubhouse Manager Ryan Shute (6^th season), and newcomers Athletic Trainer Maegan Manrow (1^st season), Strength Coach Esteban Morales (1^st season), Video & Tech. Assistant Robert Sieling (1^st season), and Advanced Scouting Analyst Stephen Schuster (1^st season).

“I’m very excited to be back in Hudson Valley where my coaching career began, working with such a strong staff and an exciting group of players,” said Bossi. “We’re looking forward to what I hope will be a memorable season for both our players and our fans.”

Aaron Bossi

Bossi, 32, returns for his second coaching stint with the Renegades, and his first as the team’s manager. Bossi was the defensive coach for Hudson Valley in 2021 on Dan Fiorito’s staff. He enters his ninth season in the Yankees organization, and his second as a manager after leading the Single-A Tampa Tarpons in 2021. He joined the Yankees in 2017, and spent three seasons assisting rehabbing players at the Yankees’ minor league complex, was slated to serve as the defensive coach for Triple-A Scranton/Wilkes-Barre in 2020 before the season was canceled due to the COVID-19 pandemic, and was the defensive and baserunning coach for Double-A Somerset from 2022-24.

Despite being displaced from George M. Steinbrenner Field in 2025, Bossi managed the Tarpons to their best overall record (63-63) since 2021. Tampa narrowly missed out on the playoffs after posting an impressive 36-29 record in the first half of the season. The Tarpons had one of the top offenses in the FSL, leading the league in batting average (.248) and stolen bases (307), and finished second in the league in OBP (.353) and OPS (.732).

As a player, Bossi signed with the Yankees signed as a non-drafted free agent. He played one season with the GCL Yankees East, hitting .333 (19-for-57) in 22 games as a catcher and infielder. Bossi played four seasons (2013-16) at Marshall University, where he was named to the ABCA Mideast All-Region First Team as a senior. Beyond the diamond, Bossi earned a bachelor’s degree at Marshall and a master’s degree in business administration from Columbia College.

Ryan Mossman

Mossman begins his first year as the Renegades pitching coach and third in the Yankees organization. He previously served as the pitching coach for Single-A Tampa (2025) and the FCL Yankees (2024), working with Bossi in Tampa. Under his guidance, the Tarpons finished tied for fourth in the Florida State League in ERA (4.24) and had the best Groundout-to-Air Out ratio (1.05) in the league. He helped develop prospects Griffin Herring, Xavier Rivas, Andrew Landry and Brandon Decker, who all went on to make big contributions on the Renegades staff in 2025.

Prior to joining the Yankees, Mossman spent four seasons (2020-23) as the pitching coach and recruiting coordinator at Milligan University, an NAIA school in Tennessee. He also coached collegiately at Emory University and the University of Mary Washington, as well as serving as the pitching coach for the Johnson City Doughboys of the Appalachian League from 2022-23.

Mossman played collegiately at Shenandoah University, where he served as a team captain and was named All-ODAC as a utility player after hitting .391 and posting three wins and a 2.25 ERA on the mound as a junior.

Scott Nestor

Nestor begins his first year as the Renegades hitting coach, and his third season in the Yankees organization. He previously served as the hitting coach with the FCL Yankees in 2024 and 2025. The FCL Yankees ranked near the top of the Florida Complex League in most major offensive categories in Nestor’s two years mentoring hitters, and led the 15-team FCL with 47 home runs in 2024.

Before joining the Yankees, Nestor spent one year as the head baseball coach at Claflin University, an NCAA Division II school in South Carolina. His previous assistant coaching stops in college baseball include one year at Villanova University (2022) and Savannah State University (2021), and seven years at Rochester (Mich.) University (2014-20) where he helped the team to two USCAA World Series appearances. Additionally, he spent four years as the Coordinator of Development/Camp Director at the Varsity Shop Training Center in Bloomfield, Michigan while also serving as the Director of Operations for the Oakland Bulldogs baseball team.

He earned his bachelor’s degree from Central Michigan University in 2011, where he also served as the President of the CMU club baseball team.

Chase Gerbrick

Gerbrick begins his first year as the Renegades defensive coach, and his third season in the Yankees organization. He spent the 2025 season as the manager of the DSL Yankees, and was the defensive and baserunning coach for the FCL Yankees in 2024. Gerbrick, 22, began his collegiate playing career at Lipscomb University before arm injuries forced him to retire. At just 19 years old, he became the youngest coach in collegiate baseball history when he served as the Director of Player Development for Indiana Wesleyan University in 2023 before joining the Yankees.

Ryan Shute

Shute begins his sixth year as the Renegades Home Clubhouse Manager and eighth in the Yankees organization, previously working for the Short-Season A Staten Island Yankees in 2019 and Rookie-level Pulaski in 2018. Before joining the Yankees, Shute was the Visiting Clubhouse Manager for the Carolina Mudcats during the 2017 season. A native of the Hudson Valley and 2011 graduate of Our Lady of Lourdes High School, Shute spent four summers as a Stadium Operations and Groundskeeping Assistant for the Renegades from 2012-15.

Maegan Manrow

Manrow begins her first season as the Athletic Trainer of the Renegades, and her third season with the Yankees. She served as the Athletic Trainer for Single-A Tampa in 2025, and was the Assistant Athletic Trainer with Double-A Somerset in 2024. Prior to joining the Yankees, she spent the 2022 and 2023 seasons as an Athletic Trainer in the Baltimore Orioles system. Manrow graduated from the University of South Florida in 2019 with a bachelor's degree, and earned her master’s degree in Athletic Training from USF in 2022.

Esteban Morales

Morales begins his first season as the Renegades Strength & Conditioning Coach, and his third year in the Yankees organization. He spent the past two seasons in the same role with Single-A Tampa, working on staffs with 2025 Renegades manager James Cooper and Bossi, respectively. Before joining the Yankees, Morales worked at the renowned Cressey Sports Performance facility in Palm Beach Gardens, Florida from 2021-24. He graduated from Temple University with a bachelor's degree in Kinesiology in 2014, and received his master’s degree in Exercise and Nutrition Science from the University of Tampa in 2020.

Robert Sieling

Sieling begins his first season as the Renegades’ Video & Tech. Assistant, and his first season with the Yankees in 2026. He spent the previous four seasons with the Washington Nationals, first serving as the On-Field Coordinator of Baseball & Softball Programs from 2022-24, and then spending 2025 as the Video Intern for the Triple-A Rochester Red Wings. While in the nation’s capital, he served as gameday operations staff for DC Breeze professional ultimate frisbee, the Washington Capitals of the National Hockey League, and coached in youth baseball clinics for Southeast Washington DC through the Drug Enforcement Administration’s Education Foundation. Sieling graduated from the University of California, Berkeley with a bachelor's degree in Anthropology in 2020, and received his master’s degree in Sports Industry Management from Georgetown University in 2023.

Steve Schuster

Schuster begins his first season as the Renegades’ Advanced Scouting Analyst, and his first season in the Yankees organization. He previously held similar roles with the Miami Marlins (2025), Detroit Tigers (2024), and New York Mets (2023) systems. Before beginning a career as an analyst, Shuster spent nine years as the play-by-play broadcaster for the Winnipeg Goldeyes baseball club of the independent American Association, where he also handled public relations duties and for three years served as an Advance Scout/Analyst for the team as well. He earned his bachelor’s in Psychology and Political Science from the University of Michigan, and earned his M.B.A. from Newman University.

The Renegades managerial job has become a launching pad in the six years under the New York Yankees affiliation, with Bossi following Cooper (2025), Nick Ortiz (2024), Sergio Santos (2023), Tyson Blaser (2022) and Dan Fiorito (2021) in the post. Ortiz and Blaser both moved up in player development into coordinator roles in other organizations, while Fiorito is now on the Yankees Major League staff.

Season Ticket Memberships, Group Tickets, and Ballpark Passes for the 2026 Renegades season are on sale now. For more information call the Renegades Ticket Office at (845) 838-0094 or slide to www.hvrenegades.com/tickets.

ABOUT THE HUDSON VALLEY RENEGADES

The Hudson Valley Renegades have served as the High-A affiliate of the New York Yankees since 2021 and are three-time South Atlantic League North Division Champions. Since 1994, the Renegades have provided the Hudson Valley with affordable, family-friendly entertainment through the game of baseball at Heritage Financial Park, part of the award-winning Dutchess County Parks system. Learn more about hosting your event at the ballpark at www.heritagefinancialpark.com.

Summit Club Memberships and Group Tickets for the 2026 season are on sale now, and may be purchased at www.hvrenegades.com or over the phone by calling (845) 838-0094. Keep up to date on Renegades news by following the team (@HVRenegades) on Facebook, Twitter, Instagram and TikTok.

ABOUT DIAMOND BASEBALL HOLDINGS

Diamond Baseball Holdings (DBH) was formed in 2021 to support, promote and enhance Minor League Baseball Clubs affiliated with Major League Baseball through professional management, best practices, innovation and investment (DiamondBaseballHoldings.com).