MGM Springfield counted revenues of $21.82 million in April, a 15 percent decline from the roughly eight-month-old casino’s best revenue month in March according to numbers released by the state Gaming Commission. Players wagered $174.95 million on the slot machines at MGM last month, and while 91.16 percent of it was returned to players as winnings, MGM Springfield reported $15.47 million in gross slot revenue in April. The casino collected another $6.35 million in revenue from its table games.

“We continue to be pleased with our overall performance. Our footprint in the New England and Northeast gaming market grew stronger in April as we solidified our corporate sponsorship with the Boston Red Sox, increased our bus service from Boston and New York City, and welcomed thousands of more customers into our loyalty rewards program through our Great Outdoors Giveaway,” MGM Springfield President Michael Mathis said in a statement.

MGM Springfield this summer “will reaffirm our commitment to the community and commonwealth through a robust calendar of events, exciting outdoor MGM LIVE concerts, sensational shows at Symphony Hall, eclectic food and beverage options in our bars and restaurants, and a dynamic series of winning casino promotions,” Mathis said.

At Plainridge Park Casino in Plainville, officials reported slots revenue of $14.06 million last month from $174.45 million in wagers. Monthly revenue dropped 11.8 percent from March, which saw the highest monthly revenue total in almost five years for the slots parlor.

Massachusetts has collected a cumulative $358 million in taxes and assessments from the two gaming facilities since each opened, the Gaming Commission said.