Francisco Lindor’s struggles with Mets includes ‘bad trifecta’ of issues

ST. LOUIS — Francisco Lindor’s slump to start his Mets career has become the most analyzed in baseball this season. Is it mechanical? Mental? The jolt of switching leagues and becoming entrenched in a new environment? Just over a month since signing a 10-year extension with the club worth $341 million, Lindor took a dreadful…