Consumers in Colorado wagered $360.3m (£297.8m/€345.4m) on sports during May, the lowest monthly total of the calendar year so far.
Player spending was 44.7% higher than $249.0m in May of last year, but 8.2% down from $392.3m in April this year.
Bettors wagered a total of $356.8m on sports online during May, while the remaining $3.5m was spent at retail sportsbook facilities across the state.
Turning to gross gaming revenue and this amounted to $27.1m for May, up 78.3% from $15.2m in the same month in 2021 and also 19.9% higher than $22.6 in April this year.
Some $26.7m of this total was attributed to online betting, with just $267,458 coming from retail sportsbooks.
Basketball proved to be the most popular sport among players, drawing $102.0m in total bets, followed by baseball on $91.0m, ice hockey at $35.7m and tennis with $20.3m. Consumers also wagered $63.1m in parlay betting during the month.
The state collected $1.7m in sports betting taxes during the month, while win percentage for licensed operators in Colorado stood at 7.53%.