What happened: Right forearm tightness has sidelined Robert Suarez since mid-June. Spencer Schwellenbach has not felt 100% during bullpen sessions, while AJ Smith-Shawver is building his workload at Triple-A Gwinnett.

Why it matters: Suarez's absence has increased the bullpen's late-inning burden. Smith-Shawver and Reynaldo Lopez could create a rotation logjam because Walt Weiss does not favor a six-man staff.

What to watch: Watch whether Schwellenbach advances to live hitters and whether Atlanta assigns Smith-Shawver to the rotation or bullpen.