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Diamond Defenders

Diamond Defenders is an infield-specific training program for those who want to take their skills and IQ to the next level. Our instructional format and the staff’s teaching abilities are tailored to players of all skill sets, from the top-tier high school player to the little leaguer getting his feet wet, and everyone in-between.


We focus on teaching athletes all aspects of the infield and most importantly that your feet will put you in the best position possible to field any ground ball. This exciting, fast-paced learning environment provides all infielders the information and tools needed to make huge strides.


Each player will be challenged with different levels of achievement, in a similar fashion to karate. When someone first joins Diamond Defenders, they will be tested on their specific abilities as an infielder and placed at their Level 1. Throughout each monthly session, instructors will equip players with what they need in order to improve and advance to the next level of the program. To gauge the progress of each infielder, a re-testing of their abilities will occur at the end of each training session. Showing growth leads to a “Level Up.”

Meet the Founder of Diamond Defenders


bryan marquez


Playing Experience:

  • 2005 Grad of Sumner High School: Honorable Mention SS

  • 2006-2007 Green River CC: In 2006 earned 1st Team All-NWACC at 3B & 2007 earned 1st Team All-NWACC at 2B.

  • 2007-2009 New Mexico State University: 2009 earned 6, 1st Team All-American awards at SS. Finalist for Brooks Wallace Award (National SS of the year). Semi-finalist for USA Golden Spikes Award; Semi-finalist for the Dick Howser Trophy (National Player of the Year); Co-WAC Conference Player of the Year.

  • 2009 Kalamazoo Kings (Frontier League): Independent professional baseball

  • 2010 Gateway Grizzlies & Kalamazoo Kings (Frontier league): Independent professional baseball

  • 2012 Rio Grande White Wings (North American League): Independent professional baseball.


Coaching Experience:

  • 13+ years of coaching, instructing, and running baseball camps of all ages.

  • 2013-Current: Asst. Head Baseball coach at Sumner HS.

"Fielding a ground ball is like having a dance partner. Each partner has a different dance & rhythm, but you must figure out that dance and take the lead." 

–Bryan “BMAR” Marquez 

ready to be a

Diamond Defender?

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