The San Francisco 49ers were back at practice Thursday afternoon http://www.sanfrancisco49ersteamonline.com/jaquiski-tartt-jersey , and a notable name was added to the injury list. Cornerback Richard Sherman was a DNP and listed with a heel injury. By all accounts he was walking around fine, but he spent practice working on a side field.My guess is this more precautionary than anything else, but Friday’s final injury report coupled with Kyle Shanahan’s end of week press conference will offer some clarity on Sherman’s status. If he is fine, so be it. If he develops into a question mark for Sunday, the 49ers have some serious issues at hand in the secondary.Ahkello Witherspoon was limited again with an ankle injury, but the 49ers also added a hip mention to the injury report. When asked how Witherspoon responded in practice this week, defensive coordinator Robert Saleh was said he came out strong mentally. He acknowledged the second year cornerback had some physical issues he still had to work through.Finally, Jaquiski Tartt was a DNP for the second straight day due to the shoulder injury he aggravated last Sunday. Antone Exum is getting first string work in Tartt’s place, and Tyvis Powell and D.J. Reed are getting work there as well.That’s three-quarters of the starting 4-3 secondary, and three-fifths of the starting nickel secondary. Getting ready to face a white-hot Chiefs squad http://www.sanfrancisco49ersteamonline.com/deforest-buckner-jersey , this is very much a bad thing. But again, Friday’s injury report is what we’re waiting for before we can make firm assessments. SAN FRANCISCO (1-1) at KANSAS CITY (2-0)Sunday, 1 p.m., ET, FoxOPENING LINE — Chiefs by 6 1/2RECORD VS SPREAD — San Francisco 0-2, Kansas City 2-0SERIES RECORD — 49ers lead 7-5LAST MEETING — 49ers beat Chiefs 22-17, Oct. 5, 2014LAST WEEK — 49ers beat Lions 30-27; Chiefs beat Steelers 42-37AP PRO32 RANKING — 49ers No. 20, Chiefs No. 449ERS OFFENSE — OVERALL (21), RUSH (3) Womens Alfred Morris Jersey , PASS (26)49ERS DEFENSE — OVERALL (23), RUSH (19), PASS (25)CHIEFS OFFENSE — OVERALL (6), RUSH (10), PASS (9)CHIEFS DEFENSE — OVERALL (32), RUSH (T6), PASS (32)STREAKS, STATS AND NOTES: Series dates to 1971, though teams have met just 12 times. ... 49ers RB Matt Breida leads NFL in yards rushing (184) and yards per carry (8.4). ... San Francisco K Robbie Gould has made franchise-record 29 consecutive FGs. ... 49ers DE DeForest Buckner has 3 1/2 sacks, second most in NFL. ... San Francisco QB Jimmy Garoppolo has 2 Womens Marquise Goodwin Jersey ,038 yards passing in first seven starts, fourth most in NFL history. ... 49ers settled for three FGs in five red-zone trips last week vs. Detroit. They have three TDs on nine red-zone trips this season. ... San Francisco has surrendered 214 yards rushing through two games. ... Chiefs QB Patrick Mahomes has NFL-record 10 TD passes through first two games. He has not thrown an INT. ... Mahomes has won both AFC offensive player of the week awards this season. ... Mahomes had six TD passes at Pittsburgh, making him youngest player in NFL history to accomplish feat. ... Kansas City TE Travis Kelce has caught passes in 65 consecutive games, third best in franchise history. ... Chiefs have had three different players with 100-yard receiving games this season: Kelce, Sammy Watkins and Tyreek Hill. ... Chiefs are allowing 430 yards passing and 508 yards total per game, last in NFL. ... Fantasy tip: Mahomes has been on tear and it probably won't stop against San Francisco, which has yet to pick off pass.