The Delaware Lottery reported that $16.8m was wagered on sports in Delaware in September.
This amount is more than double the $7.7m that was wagered on sports in August.
Delaware also saw a monthly revenue of $3.6m, a considerable increase from the $700,000 reported in August.
Out of Delaware’s three regulated sports betting venues, Delaware Park took $11.6m in sports bets accounting for 69% of the sports wagers placed in the state.
Dover Downs reported taking $3.3m in wagers while Harrington Raceway took $2m in wagers.
The massive influx in wagers could be attributed to the start of the NFL and college football seasons which both started in September.
Delaware was the first state in the US to legalize sports betting in the wake of the PASPA repeal and launched its sports betting market on 5 June.