ATLANTA — For the first time all season, the Atlanta Braves look vulnerable.After dropping the first two games of their series against the San Francisco Giants, the Braves have lost six of their last seven games dating to June 9. One rough week hasn’t erased their lead in the National League East, and their 46-27 record remains among the best in the majors, trailing only the Los Angeles Dodgers (48-27) and Milwaukee Brewers (45-26). But their recent skid has highlighted some cracks, even if there isn’t as much concern internally.“It’s a good group,” manager Walt Weiss said Wednesday. “They’ll find their way through it. We got the right guys in there.”What’s up with Austin Riley?For years, third baseman Austin Riley has been a pillar of Atlanta’s offense. Even when Ronald Acuña Jr., Matt Olson or Ozzie Albies endured cold stretches, it seemed the Braves could always count on Riley’s power in the middle of the lineup.That hasn’t been the case in 2026.Entering Thursday, Riley was hitting .211/.292/.355 and a 28.5 percent strikeout rate. Those numbers track well below his standard.The underlying metrics paint an equally troubling picture. Heading into this week, Riley was hitting just .189 against breaking pitches, continuing a decline from when he hit .260 against them in 2024. He’s also having trouble making contact against higher velocities. He owns a .227 average against all fastball types, a steep drop from his .274 career average.But possibly more alarming is the decline in Riley’s performance against right-handed pitching. He’s batting just .192/.275/.355 against righties, compared to a career line of .263/.326/.472.