The one thing the Red Sox know about their situation at first base is that Triston Casas won’t play for the rest of the season. Casas ruptured his left patellar tendon on Friday and underwent successful surgery on Sunday that will require an extensive rehab.

While starter Brayan Bello rightly took the brunt of the blame for the Red Sox losing 10-4 to Atlanta to drop the series 1-2 and fall back to two games under .500 on Sunday, Story continued what has been one of the most dismal offensive stretches you'll see.

If you were hoping to see young infielder Kristian Campbell at first base in the near future, you may be a tad disappointed. Boston is in the middle of a 10-ga

This grim situation at first has forced Boston’s hand and now has its starting second baseman, rookie Kristian Campbell, taking practice reps at first base. Despite his incredible athleticism and team-first mentality, it might be a while until the Red Sox see Campbell there regularly.

With Triston Casas out for the season with a ruptured left patellar tendon, the Red Sox are deciding how to proceed at first base ... about longer-term solutions are ongoing,” said chief ...

Red Sox rookie Kristian Campbell is working out at first base, but the timeline of when he might be ready is murky.

The plan now is for Mayer to see roughly four games a week at second base. Just in case Campbell — who began the season as the Red Sox’ starting second baseman — catches on at first base.