Authorities say 19-year-old William Mack Sapp of south St. Louis County is charged with second-degree assault and leaving the scene of an accident. He is jailed on $500,000 bond following his arrest on Wednesday. It wasn't immediately clear if Sapp had an attorney.
The other alleged racer, 19-year-old Trenton Pinckard of Glen Carbon, Ill., was charged earlier this week with leaving the scene of an accident.
The St. Louis area's newest casino is falling short of revenue projections.
The St. Louis Post-Dispatch reports that the River City casino in south St. Louis County is now projected to generate slightly less than $8.2 million in its 10 months of operation this year, and a little less than $10 million in 2011.
North St. Louis County law enforcement will be stepping up efforts in the fight against drunk driving this holiday season after receiving a grant to purchase a Breath Alcohol Testing, or BAT van.
The BAT van helps keep officers on the street to detect more impaired drivers, as opposed to hauling individual arrests to police stations. The van will be shared among the North St. Louis County police departments, including 36 different law enforcement agencies.