Red Sox Team Stats 2020:
25th in starter ERA, 30th in starter WHIP
27th in reliever ERA, 28th in reliever WHIP
I think they need to focus on both if they want immediate improvement. However, the Sox bullpen lead the league in IP. Maybe having better starting pitching would keep them from having to put so many innings on a poor relief crew? Maybe adding more starters pushes some better pitchers into a relief role which gets rid of some of the truly terrible relief options that were on 2020's staff?