https://blogs.fangraphs.com/fitting-jarren-duran-into-the-red-sox-outfield-puzzle/
Interesting note from FanGraphs write up on Duran:
Over the past five seasons, lefties going oppo in Fenway have hit .403 and slugged .641, the highest marks of any permanent ballpark ... Lefties pulling the ball in Fenway hit .332 and slugged .624, not only lower than when they went oppo, but also rates that respectively rank 28th and 30th out of 32 ballparks.
The article mentions that Duran fell back a bit last year as he increased his pull rate and wasn't playing towards Fenway's strengths. Also notes that his range fell off in '25 and that he struggled against breaking pitches more so than in previous years.