Keith Holden Head Coach

Keith Holden

Head Coach
Defensive Line coach

Varsity Head Coach Keith Holden is a graduate of Half Moon Bay High School (1992). He played on the Cougar Championship teams of 1990 and 1991, playing both offensive and defensive line.  He attended CSM where he played for the Bulldogs and then transferred to Whittier College in southern California where he played offensive line. At Whittier, he earned his degree in Sociology. He later earned his teaching credential and master's degree from National University. He returned to Half Moon Bay High School several years ago as a Special Education teacher and football coach. He and his wife Meredith have a daughter, Addison, and a son, Paxton.

Willie Hillyard Offensive Coordinator / Slots

Willie Hillyard

Assistant Coach
Offensive Coordinator
Slot coach

Willie Hillyard graduated from HMBHS in 2006. He was the starting center his junior and senior years. Willie was named All Conference and All County first team as a senior when the Cougars won the PAL and Central Coast Section Championship in 2005/2006. He is a John Francis Award winner. Willie played center for two years at the College of San Mateo before transferring to and graduating from the University of Santa Barbara with a degree in Sociology in 2010. Willie has coached at HMBHS for six years. He was Head Coach of the 2012 HMBHS J.V. football team (8-2). 

Don Dias Offensive & Defensive Line


Offensive Line Coach
Outside linebacker coach

JRonnie Ekis was raised in a North Kansas City suburb. Ronnie earned a varsity letter for 4 years, and was a 2006 Missouri All-State selection out of Smithwille HS in Smithville, MO. He was also selected to the 2006 Missouri High School All-Star Team as a senior. From there, he attended the University of Missouri to further his football career. A year later, he made a life decision to leave Missouri and head back to his coastal roots. Ronnie, having been born here, both parents being HMBHS graduates, and with plenty of family in the area felt the community to be a perfect fit for a fresh start. This is his forth year as a coach for the football program. Coach Ekis graduated from San Francisco State University this past May with a degree in Biology. He plans to pursue a teaching credential in the sciences at Notre Dame de Namur University.


Breen Hofmann

Running Back Coach
inside linebacker coach

Coach Breen Hofmann graduated from HMBHS in 1985. He was a three sport athlete playing football, wrestling and baseball.  By his senior year in football he was named MVP, First Team All-League, All County and All Bay Area. 

After high school, Breen continued playing football at the College of San Mateo and baseball at Skyline. For his accomplishments at HMBHS he was inducted into the HMBHS Hall of Fame in 2015.

Breen has been very active in the Coastside community, coaching youth soccer, baseball and football. He has been former president of Coastside Pop Warner football for the past six years. In 2010 he coached the Coastside Cougars Jr. PeeWee Popwarner team to a Northwest Championship and the went on to win the Best of the West Bowl game.  Because of his extensive work with Coastside youth, Breen was awarded the 2014 Perry Yonamine Unity Award by the San Francisco 49ers.

Breen and his wife Emma live in Half Moon Bay with sons Chase currently a junior at HMBHS and Tristan currently a 8th grader at Cunha. They own and operate the Lazy H Ranch.



Defensive Back Coach
Wide Receiver Coach

Coach Martin has lived on the coastside for 30 years with his wife Caroline while raising his daughter Maeve and son Kellen. Robert was a volunteer coach for Coastside Pop Warner before taking a varsity coaching position with Barrett and Mike Krieger at Mills High School for two years. At Mills, Martin helped the Vikings win a league championship while assisting with the offensive and defensive lines, and special teams. After a two-year hiatus to watch son Kellen compete on the HMBHS Varsity Team and win a CCS Championship, Robert returned to HMBHS as a coach on the Varsity team. Coming off CCS Championships in 2015 and 2016, Robert is looking forward to his 11th year at HMB High School coaching football.

Jessica Markbreiter

Head Athletic Trainer

Head Athletic Trainer Jessica Markbreiter completed her Master's in Athletic Training from A.T. Still University (Mesa, AZ) in the spring of 2015 prior to joining the athletic staff at Half Moon Bay High School mid-fall in 2015. While in Arizona she worked as a graduate assistant Athletic Trainer at Phoenix College working closely with Men's/Women's soccer and baseball. Prior to graduate school she attended Texas Christian University (Fort Worth, TX) where she earned her Bachelor's in Athletic Training. Over her past six years of education she has gained clinical experience in Division 1, Junior College, and High School setting(s). Jessica is excited to be joining the athletic staff at Half Moon Bay High School for her second year.