The Braves are NOT who Spencer Arrighetti wants to see in his second start after allowing 7 earned runs in his MLB debut. The Astros are desperate for starting pitchers after losing Valdez and Verlander to the IL. As a result, they probably pulled up Arrighetti sooner than they wanted to. He got smashed by the Royals and not much should change vs the Braves who put up 9 runs last game (6 in the first 7 innings) and have covered this line in their last 4 of 6. Even before his MLB debut, he allowed 9 runs in 9 innings in the minors.
A good alternate is the over 5 runs for the full game for the Braves, but like the value better for the over 3.5 in 7.