What is causing James Wood's second-half slump for the Nationals?

Washington Nationals v New York Yankees | Vincent Carchietta/GettyImagesJames Wood’s start to the season was extraordinary. Before the All-Star break, the left fielder had 24 home runs, 69 runs batted in and a .915 on-base plus slugging percentage. He joined a short list of great former Nats to hit 20 home runs in a season before turning 23 and began to cement himself as an ascendant talent in the game. He was living up to his status as a key acquisition for the Nationals in the Juan Soto trade.

The second half of the season, though, has not gone well for Wood. Since the All-Star break, the lean slugger only has two home runs and a paltry .629 OPS. After joining elite company in the first…