Maybe the Braves should be favorites here, slight favorites. But at this price the line is outrageous. It presents tremendous value on the Cardinals. 

St. Louis has won three in a row. The Cardinals have allowed only five runs in their last four games.

The Braves are 1-6 in their last seven games. Atlanta is a season-worst five games below .500. 

The pitching matchup is John Gant versus Charlie Morton. It's Morton who has the bigger name, but you can make the argument Gant has been the more effective pitcher this season. Morton has a 4.50 ERA. Gant's ERA is 3.36. Gant has been better on the road, too, where his away ERA is 2.27. 
Morton has a bad history against the Cardinals. He's 2-12 lifetime versus them with a 5.68 ERA in 18 starts. It has been 10 years since Morton last defeated the Cardinals. 

Atlanta's bullpen has been disappointing, while the Cardinals' Alex Reyes has developed into a top closer ranking fourth in saves with 17 while holding a 0.82 ERA. The Braves' bullpen carries a high fatigue ranking also. Atlanta has permitted 10 runs in each of the past two days. Braves relievers have logged 11 2/3 innings during these last two days.

St. Louis has enjoyed good success against the Braves in Atlanta winning 11 of its past 15 visits.