From the American Swimming Coaches Association certified coach directory. ASCA publishes the credentialed coach list with level, primary club affiliation, and stroke specialty when reported. The roster JSON sources directly from that official ASCA dataset.

Level 3 is intermediate club coaching. Level 4 is senior coaching with documented age-group success. Level 5 is the master coach tier, typically held by national-level coaches with extensive Olympic Trials or NCAA coaching experience and proven stroke development records.

Yes. Masters Swimming coaches are flagged separately when present in the city. The mastersCoach count per row surfaces masters-focused coaches, which helps adult swimmers find coaches who work with adult athletes rather than only age-group youth swimmers.

Each coach row carries a primary stroke specialty plus secondary strokes when reported. The template surfaces the dominant stroke specialty for the city as a headline, with full stroke breakdowns in a sidebar for swimmers focused on specific stroke development.

Each city still gets a page. The template emphasizes the individual coach profile when the count is low. Sparse cities still rank for local intent because the credential signal is consistent with what serious swimmers actually evaluate during coach selection.

Coaches affiliated with USA Swimming registered clubs have their club listed in the poolAffiliations field. The template renders those affiliations as sidebar links to the clubs, which gives swimmers a path from the directory directly to the club's training context.

Yes. Each row supports a recentResults field that flags coaches with athletes at recent USA Swimming Junior Nationals or higher meets. The template renders that as a credibility callout, which signals competitive coaching success in addition to credential level.

ASCA runs annual credential reviews. After each review cycle, you merge new and re-certified coaches into the affected city rows and trigger a rebuild. Cities with newly promoted ASCA Level 4 or 5 coaches pick up credential upgrades, and unchanged cities stay served from cache.