Meet the Team

MMB Certified Instructors

The process of becoming an MMB instructor takes months to complete and continues throughout an instructor’s career. This entails detailed video analysis, hours sitting-in on current sessions, and working with all certified instructors and Mike Murphy to fully understand the MMB methods. This means that no matter who your student is training with, you are assured that they are MMB certified, and you will receive the best we have to offer. Each player is important to us and will be treated as such. We look forward to working with your player not only on the mechanics of hitting, pitching, fielding and beyond, but also to impart the How and Why things work. MMB players are among the most knowledgeable due to the detailed instruction they receive from our excellent instructors.

Meet the Team

Tom Rosemeyer
Tom RosemeyerPitching, Hitting

Tommy has been an instructor with MMB since 2009. He played at for Acalanes High School, Sierra College, and Los Medanos College. In 2008 he became the head pitching coach for the College of the Siskiyous. Tom’s pitching knowledge and ability to get the most out of his pitchers is unmatched. His no-nonsense approach along with his broad knowledge of the game is second to none in the Bay Area.

Chris Debiasi
Chris DebiasiHitting, Fielding

An MMB student member since 2002 and instructor since 2006. Chris was a two-sport athlete at Concord High and two sports athlete at Los Medanos College before earning a baseball scholarship to Patten University. Chris began playing professional baseball in 2008. He played under and learned from ex-major league players Gary Templeton, Cory Snyder, and Albie Lopez. Chris earned two All-Star appearances, a Fan Favorite award, and was team captain twice in his minor league career. Chris teaches hitting, base running and fielding.

Kristina Thorson
Kristina ThorsonGirls Fastpitch

Kristina graduated from Shorecrest High School in 2002, where she played softball and performed in the
Wind Ensemble and Marching Band. After graduating, she moved to Berkeley to play for Cal’s
perennially ranked softball team. She appeared in 3 WCWS tournaments, as well as 2 National
Championship games. In 2006, after graduating with a degree in Public Health – Infectious Diseases,
Kristina started doing pitching lessons in the off season while she played professional softball. During
her 6 years in the NPF, she played for the Philadelphia Force, Chicago Bandits, and Akron Racers. MMB
took her on as the fastpitch pitching instructor in 2007.

HS Awards:
2002 Washington State Gatorade Player of the Year
2002 High School All American
2002 Shorecrest High School Female Athlete of the Year
2002 Shorecrest Softball Defense Award
2002 Shorecrest Athlete of the Spring Season
2001 Washington State 4A Champion
3x All Western Conference Team

UC Berkeley:
NFCA Second Team All American
Easton First Team All American
PAC10 Pitcher of the Year
PAC10 Medal Winner
All- Pacific Region First Team
First-team PAC10
NFCA Second Team All American
Easton First Team All American
All-Pacific Region second team
First team PAC10
PAC10 Champion

NFCA Second Team All American
2004 NCAA Regional MOP
All-Pacific Region second team
First team PAC10
All PAC10 Honorable Mention

Third pitcher in Cal history to amass 100+ wins and 1,000+ strikeouts
Set several pitching records for Cal softball:
Wins in single season: 36
Saves in a single season: 5
Career Saves: 12

2018 Cal Athletic Hall of Fame Inductee

Philadelphia Force 2007
Chicago Bandits 2008-2010
Akron Racers 2011-2012
2007 Rookie of the Year
All-Star 2007, 2011
2008 World Champion

2006 Played for the Dornbirn Sharx in Dornbirn, Austria (League Champions)
2010 & 2011 Played for Fiorini in Forli, Italy (FIBS 2 nd place)

2006 Team USA University Tryout Invite
2007 Team USA Tryout Invite

Eric SicklesHitting

Adam was born in Rexburg, Idaho believe it or not but only spent about six months there. He grew up in San Ramon, CA and graduated from San Ramon Valley High School in 2000. Some of his accomplishments in baseball growing up include:  1997 PONY World Series Championship, 1999 NCS Championship SRVHS, 2000 American Legion World Series Championship.

He then went on to Sacramento City College in for the 2001 and 2002 baseball seasons and at the time Sac City was one of, if not the top Junior College program in the country. Sac City was dubbed JC program of the ‘90s. From there Adam obtained a baseball scholarship to the University of Miami (Fl) where he played in both the 2003 and 2004 College World Series (“should have won in ’04, we had the best team but blew it with errors”). He played shortstop and second base through college.

Adam was drafted in the 10th round by the Chicago White Sox in 2004 and ended up spending 14 years in the organization. He played in the minors for eight years reaching the AAA level, and was on the major league coaching staff as a bullpen catcher for the last six years. He continued playing infield through the first few years in the minor leagues while developing into a catcher. Adam is confident in the knowledge he has learned up to this point, and looks forward to continuing his growth. Adam has expertise in infield, catching, and of course hitting. As you know, you can’t last as long as we did without knowing how to hit.

Chris Grossman
Chris GrossmanCatching, Hitting

Coming Soon!