From the video

Video: Week 2 was a Bloodbath.
he is dealing with a hamstring injury, which kept him out this game, but he was limited in practice toward the end of next week... Usually hamstrings are a 2-week absence. So, I would say it's you know, as positive as the reports were for Zay Flowers being very close to play, I don't think it's a guarantee that he ends up playing next week.

STACKED’s take

Negative signalInjury

Hamstring injury likely sidelines Flowers through Week 3; no guarantee for Week 3 return.

Suffered a hamstring injury that kept him out of Week 2; was limited in practice toward the end of the week. Hamstrings typically sideline players for two weeks, so despite positive reports about him being close to play, the source does not guarantee his availability for Week 3 and advises fantasy managers to prepare for his absence.

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