What happened: Piñeiro had been dealing with an illness, while Black had a groin issue. Black's availability follows expectations earlier Sunday that he would play.
Why it matters: The active designations preserve options at kicker and running back. Piñeiro had missed all three practices during the week. [NBC Sports Bay Area](https://www.nbcsportsbayarea.com/nfl/san-francisco-49ers/eddy-pineiro-injury-week-2-dolphins/1964349/)
By the numbers: Black opened the season with 14 carries for 65 yards, averaging 4.6 yards per carry, and played 43.8% of offensive snaps.
What to watch: Watch Black's workload after his opening-week involvement.