On this day in Boston Celtics history, the foundation of a legendary dynasty was laid. In 1957, the Celtics captured their very first NBA championship, a hard-fought 125-123 double-overtime victory over the St. Louis Hawks in a legendary Game 7 at Boston Garden. This win ignited the Celtics' unparalleled run to 18 titles, a record that still stands today.

The victory was powered by two iconic rookies who would define an era. Future Hall of Famer Bill Russell, in his first Finals, grabbed a then-record 32 rebounds for a rookie, showcasing the defensive dominance that would become his trademark. Fellow rookie Tommy Heinsohn was unstoppable on offense, pouring in 37 points and adding 23 rebounds. This dynamic duo's performance announced the arrival of a new basketball powerhouse.

Beyond the championship, this date marks the Celtics' selection of Jim "Loscy" Loscutoff with the third overall pick in the 1955 draft. A defensive enforcer, Loscutoff played a crucial role in six Celtics titles over nine seasons. In a testament to his team-first mentality, he famously requested his nickname "Loscy"—not his number 18—be retired, allowing future Celtics to wear the jersey.

We also celebrate the birthdays of several Celtics who wore the green. Tony Kappen, a guard on the franchise's inaugural 1946-47 team, and Dermie O'Connell, who played two seasons after going undrafted out of Holy Cross, were both born on this day. Their contributions are part of the rich tapestry of players who have built the Celtics legacy from its very beginning.