On theathletic.com, Tim Britton wrote that this season "the Mets’ perceived strength has been their biggest weakness."
He's talking about their starting pitching.
The article focuses on Jacob deGrom's last start against the Braves, "his first non-quality start in nearly a year," according to Britton.
Last year, Mets ace Jacob deGrom won the Cy Young Award, finishing the season with a 1.70 ERA. This season, after four starts, his ERA is 3.68 and, in his last start against the Braves, in just five innings he threw 114 pitches: Only 62.2% were strikes.