Columbia turned a pair of fourth-quarter turnovers into touchdowns to come from behind to beat Dickson County 21-16 Friday night in the Cougars’ home opener. Mario Williams rushed for 185 yards and all three Lion scores on runs of 59, 31 and 35 yards as Columbia improved to 2-0. Dickson County got 179 yards and a 15-yard TD from Otis Gerron and a 31-yard field goal by Jacob Williams to take a 10-7 lead into the final quarter. But a Cougar fumble set up Williams’ second score and a fumble on the ensuing kickoff led to his third touchdown. Dickson County battled back with a nine-yard TD pass from Will Harmon to Isaiah Burns in the final minutes, but the two-point conversion failed, leaving the Cougars down by five. The home team’s final shot at pulling out the win ended when Williams intercepted a pass in the closing seconds to ice the game. Falling to 0-2, Dickson County has a short week to recover as the Cougars will host Franklin in their first District 11-AAA contest at 7:00 Thursday in Dickson County Stadium.