The state's six casinos generated $126.2 million in revenue in January, up 42.8 percent from January 2016. MGM National Harbor, which opened Dec. 8, led the way with $48.8 million.
Excluding MGM, the casino revenue decreased year-over-year by nearly $11 million, or 12.4 percent.
Maryland Live Casino saw a year-over-year drop for the second straight month, generating $44 million in January, down just over $8 million, or 15.6 percent. Maryland Live is the closest casino to National Harbor.
Likewise, Horseshoe Casino Baltimore saw a year-over-year decrease of 14.5 percent to $20.2 million in revenue in January. That comes after Horseshoe realized a 9.1 percent increase in December despite MGM National Harbor opening.
Officials at both Maryland Live and Horseshoe said they expected a few months of drop off before things leveled out once the allure of MGM National Harbor died down.
Hollywood Casino Perryville saw revenue go up 4.6 percent to $5.8 million while Rocky Gap Casino Resort brought in $3.7 million of revenue in January, a 11.8 percent increase over last year. Casino at Ocean Downs generated $3.7 million in revenue, a 1.2 percent drop compared to last January.
Located in Prince George's County, MGM National Harbor sits on the shores of the Potomac River, just across from Washington, D.C., and Virginia.