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Shaun Seibert – Pitching Instructor

Shaun Seibert is an Edwardsville, IL native.  He played high school baseball at Edwardsville High School (EHS).  Seibert competed in two State Tournaments (2002 and 2004) at EHS.  After high school, Shaun Seibert continued his baseball and academic career at the University of Arkansas (2004-2008).  After the 2005 baseball season, Seibert was named Freshman All-American (5-3, 3.60 ERA, 19 APP, 60 IP, 52 K, 31 BB).  Following the 2006 season with the Razorbacks (4-0, 2.79 ERA, 17 APP, 61.1 IP, 62 K, 15 BB), Seibert went on to pitch in the Cape Cod Baseball League.  During the Summer of ’06 Seibert earned Cape Cod Pitcher of the Year recognition (6-0, 0.39 ERA, 8 GS, 45.2 IP, 36 K, 28 BB).  Shaun finished his baseball career at Arkansas in 2008 (Career:  11-4, 3.91 ERA, 55 APP, 165.2 IP, 156 K, 79 BB) and graduated with a Bachelor of Science in Education Degree with a concentration in Kinesiology.

Seibert joined the Gateway Grizzlies during the 2008 season.  He pitched for the Grizzlies during the 2008 and 2009 seasons.  After finishing his baseball-playing career, Shaun attended Southern Illinois University at Edwardsville to earn teaching certification in Illinois.  During his time at SIUE, Seibert served as a student manager with the SIUE Men’s Baseball team under Bo Collins.

Seibert then began a career in education with the Edwardsville School District.  While employed for seven years (2010-2017) by ECUSD as a physical education teacher, Seibert was also a member of Edwardsville’s baseball coaching staff.  He coached Middle School Baseball for Edwardsville during the Fall seasons, and coached High School Baseball during the Spring and Summer seasons.





Along with former Gateway Grizzlies hitting coach Darin Kinsolving, Phil Warren is the owner of the Grizzlies Baseball Academy.

Warren is also the manager of the Grizzlies.  2014 will mark Warren’s eighth season as the skipper of the Grizzlies.  The St. Louis native is the longest tenured manager in Grizzlies history.

“I am truly blessed to have the opportunities in front of me that I do.  I couldn’t do what I do without the support of my wife, the guidance and quality up-bringing of my parents, the teamwork and companionship of my staff with the Gateway Grizzlies and Grizzlies Baseball Academy, and the trust and commitment of Rich Sauget and the Gateway Grizzlies Organization.  I enjoy helping develop youth baseball players in the Metro-East as well as Manage the Gateway Grizzlies Baseball Team in our quest for a Frontier League Championship.  It is a pleasure to be an integral component in our owner Rich Sauget’s mission to provide an affordable, family-friendly, fun, and complete baseball experience here at GCS Ballpark.”

Warren will enter 2014 with 356 career managerial wins, good for the most in team history and sixth most in league history.

A former star at Vianney High School and Southeast Missouri State University, Warren has led the Grizzlies to 54 wins or more in three of the last four seasons, including a West Division Title in 2012.  His 2013 team finished 53-43 and only one game short of the postseason.

“Phil has done an outstanding job as our manager,” Grizzlies general manager Steve Gomric said.  “We’re thrilled to have him back for another year.”

In 2010, Warren passed former manager Danny Cox to become the franchise’s all-time leader in managerial wins.

Warren guided the Grizzlies to a second-half turnaround and a second straight post-season appearance in his second season in the dugout in 2008. He led the club to a franchise-record 64 wins, and the West Division title in his inaugural season as the skipper.

The former Frontier League All-Star spent the 2006 season as the Director of Player Personnel and was named as the fourth manager in franchise history November 3, 2006.

Prior to the 2006 season, he spent three seasons on the playing field for the Grizzlies and parts of six seasons total in the Frontier League. Warren retired following the 2005 season, holding many of the Grizzlies career offensive records including most games, most hits, most home runs and most RBIs. Warren held 11 total Grizzlies career offensive records when he retired as a player.

Prior to his Frontier League career, the St. Louis native played baseball at SEMO. Warren played high school baseball and soccer at Vianney High School.

Warren continues to work closely with little leagues in the Metro East and the St. Louis area. He will direct Grizzlies Summer camps at GCS Ballpark and local league facilities.

Phil and his wife Sarah reside in Freeburg, Illinois along with their three labrador retrievers.



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Mike Breyman – Hitting Instructor

Mike Breyman serves as the primary hitting instructor at the Grizzlies Baseball Academy. Breyman, 32, spent seven years with the Gateway Grizzlies as a player or coach before being named the manager of the Joliet Slammers prior to the 2013 season. In 2014, he will serve as the team’s bench coach while continuing to do lessons at the Academy.  Breyman will join hitting coach Zach Borowiak and pitching coach Randy Martz on eighth-year manager Phil Warren’s staff. “Mike has done a tremendous job teaching baseball at the Academy,” Warren said.  “He’s knowledgeable about the game and interacts well with the young kids.  We’re thrilled to have him.” Breyman served as the Grizzlies hitting coach during the 2012 season, helping lead the team to a 57-win season, a West Division title and the team’s first playoff appearance since 2008.  Under Breyman’s direction, the Grizzlies finished second in the league in runs and displayed impressive improvements at the plate. “I love teaching the game of baseball at both the youth and professional levels,” Breyman remarked.  “It’s exhilarating for me to see a kid have success on the field after I work with him.” A native of Attica, OH and current resident of Belleville, IL, the father of two played for the Grizzlies from 2004-2008 and held the role of bench coach during the 2009 season.  He was the hitting coach of the River City Rascals in 2010 and 2011. During his playing career, Breyman put up monster numbers en route to being one of the most prolific hitters to ever wear the Gateway uniform.  Upon his retirement as a player in 2008, Breyman held nearly every offensive record for the Grizzlies, including most hits, RBI and total bases.  He also smacked 82 home runs over parts of five seasons with the Grizzlies. Breyman enjoyed a record-setting high school career in Ohio, batting .810 during his senior season.  That record still stands as the highest single season batting average in the history of high school baseball in the United States.  Breyman carried that success into a great college career at the University of Kentucky.