SANTA CLARA — It looks as if Mac Jones will continue to do the heavy lifting for the 49ers’ offense and he hopes to be sharper after a solid week of practice.

Jones hasn’t been announced as the starter Sunday night against the Atlanta Falcons (5:20 p.m., NBC) and has been listed as “limited” as he deals with knee and oblique issues. But coach Kyle Shanahan conceded that incumbent Brock Purdy (turf toe) is “more limited” than Jones and appears destined to miss his fifth game of the season and third in succession.

That may or may not put Purdy in line to start on Oct. 26 against Houston on the road.

In the meantime, Jones has been carrying a run-deficient offense to the tune of 313 yards per game — the most in the NFL.

The good news is Jones feels he’s still getting better.

“Every day y

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