What happened: Marchán injured his left knee during a swing on July 22 and was diagnosed with patellar tendinitis. His 10-day injured-list stint was backdated to July 23.
Why it matters: The assignment moves him into game action before a potential return to the major-league catching mix. His recovery would restore depth behind the plate for the stretch run.
By the numbers: The rehab assignment begins 21 days after Marchán's IL stint was backdated to July 23.
What to watch: His workload and response in game action will shape the timing of an activation decision.