Where Professional Athletes Train Our Youth
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Professional Instructors

“We encourage the question WHY?”

Our instructors constantly encourage their students to ask the question WHY? “Because I said so” is unacceptable at GBG Training Academy. We want all students to understand WHY they are doing a drill, WHY they are making a mistake, and WHY this is helping them.

GBG Certified Instructors are well versed in these learning domains, as they relate to baseball, making them high-valued instructors. These men and women have themselves mastered skill-sets as it relates to the game. They also have the language and tools to communicate these skills while ensuring your student understands and applies the information!

Every person listed on this page is a GBG Certified Instructor. Many are former athletes who have flourished at major college, minor league and or major league level. All instructors have participated in GBG instructional classes, instructional workouts, as well as completing the intern-instructor program.

Scotty Davison

Coaching Experience:
Over 20 years

  • Drafted in 1988 (as a Shortstop)
  • Played professionally for 11 years
  • Reached the Major Leagues as a Pitcher
  • Owner of House of Hardball for 10 years
  • Varsity Pitching coach, Mater Dei High School
  • Assistant coach, West Torrance High School
  • Graduated from Redondo Union High School
  • Two-Time Daily Breeze Player of the Year
  • Two-Time CIF Player of the Year
  • High School All-American

Tony Liebsack

Coaching Experience:
Over 20 years

  • Played at Florida State University (1991-1992)
  • Played in College World Series both years
  • Played at Harbor College (1989-1990)
  • Inducted into Harbor College Athletic Hall of Fame 2016
  • Won State Championship (1990)
  • 1st Team All-State, 1st Team All-American (1990)
  • Graduated from Gardena High School
  • All-Area 1986, All-L.A. City 1987
  • Coached at Carson, Banning and Los Alamitos High Schools
  • Summer camp coaching at Mike Martin School of Baseball (Tallahassee, FL) 1993-2000; and Mark Cresse School of Baseball 2004-2016

Nick Sprowls

Coaching Experience:
Over 5 years 20  

  • Played collegiately at The Citadel (pitcher)
  • Attended High School in South Carolina
  • All-State Low-Country Player of the Year
  • 4A Player of the Year

Robby Hudson

Coaching Experience:
Over 6 years

  • Drafted in 2005
  • Played professionally for 6 years
  • Attended University of Texas
  • NCAA Div. 1 National Champion
  • All-Big 12 shortstop
  • Attended Riverside Community College
  • Junior College National Champion

Phil Avlas

Coaching Experience:
Over 6 years

  • Drafted in 2001
  • Played professionally for 10 years
  • Cal-League All-Star catcher
  • Southern CA. native, attended Kennedy High
  • Won LA City Championship in 2000
  • Co-Player of the Year in the City section

Zak Krislock

Coaching Experience:
Over 8 years

  • Drafted in 1992
  • Played 4 years professionally
  • Attended UC Irvine for 1 year
  • Transferred to University of Oklahoma
  • 1st-Team All-Big 8 Conference
  • Presently head coach at Chadwick, Palos Verdes
  • Born and raised in the South Bay
  • Coached at South High and Mira Costa

Marcos Arias

Coaching Experience:
Over 5 years

  • Attended University of South Carolina
  • Transferred to Southeastern University
  • Won back-to-back NCAA Div II Championships
  • Tournament MVP

Tim Williams

Coaching Experience:
Over 20 years

  • 4 year Varsity Letterman (St. Bernard HS)
  • 4 year 1st team Camino Real League All-Conference
  • 3-time Camino Real League MVP
  • 1985 All-CIF Second Team
  • 1986 All-CIF First Team
  • 1986 U17 Team USA National Team (Australia)
  • 1987 Daily Breeze Co-Player of the Year
  • 1987 SouthBay Player of the Year
  • 1987 All-CIF First Team
  • 1987 All-CIF Player of the Year
  • 11th round draft pick (Milwaukee Brewers)
  • 1987 Junior Olympic West Team (Chapel Hill, NC)
  • 1987 U18 Team USA National Team (Canada)
  • Offered 18 Full D-1 Scholarships
  • Played Collegiately at Loyola Marymount University
  • 1988 West Coast Conference “Freshman of the Year” Nomination
  • 1988 Cape Cod League All-Star (Fenway Park)- Hyannisport Mets
  • 1989 Alaska League U.S. Open Invitational MVP- Alaska Goldpanners
  • 3 Year WCC All-Conference Outfielder
  • 1990 “Baseball America” Magazine All-America Finalist
Spencer Kreisberg

Spencer Kreisberg

Coaching Experience:
Over 5 years

  • Played at Div. II San Francisco State University.
  • Member of the Great Britain National team.
  • Played in the 2016 World Baseball Classic.
  • Played Professionally in Europe.
  • Coached at South Torrance High and Tigard High (Ore.)

Ramon Garciaparra