PREP FOOTBALL: RB coach Elrod steps down   Brad Elrod has
resigned as Rancho Bernardo High football coach after 20 years
with the program, the last four as head coach, the school's
athletic director confirmed Monday.  He'll be replaced by
Tristan McCoy, an All-CIF San Diego Section linebacker for the
Broncos in the 1990s and an assistant with the team for the last
six seasons.  “While Brad’s decision to step down as head coach
didn't come as a surprise, it's always difficult to lose a
valued member of your coaching staff," RB athletic director
Peggy Brose said. “Brad is a knowledgeable, ethical and well-
respected football coach who always placed a far greater
importance on the overall development of his student-athletes
than he did on wins and loses. His impact on Broncos football
will be felt for many years to come.  “We're excited to bring
Tristan on board as our next head football coach. Tristan is a
natural leader and will bring an influx of new ideas to blend
with the long-established traditions of our f