If we think of 29yo Tyler O'Neill as a replacement for 36yo Adam Duvall, that means 27yo Jarren Duran des replace 39yo Justin Turner. Duran was fairly close to Turner at the plate most of the summer, and given their ages, might be the more likely to repeat.
For all this talk bout how the Sox didn't replace their best hitters (which they did), why not also look at how they replaced their worst ones?