SANTA CLARA, Calif. -- In preparation for Sunday's game against the New Orleans Saints , the San Francisco 49ers have been preparing all week to be without starting quarterback Brock Purdy .

On Friday, coach Kyle Shanahan made it official, announcing that Purdy will not play in New Orleans with veteran Mac Jones set to start in his place. Purdy did not practice at all this week as he deals with left shoulder and toe injuries that he suffered in last week's win against the Seattle Seahawks .

Shanahan has indicated that the toe injury - which is similar to turf toe - is the bigger concern for Purdy and that it could keep Purdy out for multiple weeks. Niners general manager John Lynch told KNBR radio on Thursday that Purdy's injury is considered a "week to week" proposition.

With

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