A 4-3 defeat at San Francisco dropped the Atlanta Braves to 10 games under .500 and 9 1/2 behind the National League’s final playoff spot. The Braves haven’t missed the postseason since 2017. It’s too early to count them out this year, but they can’t afford to have much more go wrong. Atlanta started the season 0-7, then spent about six weeks clawing its way back to .500. All that work has already been undone after the Braves dropped another seven straight this past week. The last five of those defeats have been by one run.