Coach Pete Carroll said everyone on his roster is “live” when the Raiders host the 49ers on Saturday at Allegiant Stadium.

That raises the possibility of his starters getting on the field for the second preseason game. If so, it could be a good indicator of where the Raiders stand three weeks before the season opener at New England.

Here are three things to focus on in Saturday’s game:

1. Starters’ playing time

Carroll hinted last week that his starters would get extended playing time. But that was before the Raiders hosted the 49ers for a joint practice Thursday that lasted 2½ hours.

The long, physical practice in intense heat could change Carroll’s thought process on his starters. On the other hand, the game probably will be the final dress rehearsal before the season opener. Chance

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