Nahki Wells and his Bristol City teammates were sunk by three set-piece goals on a disappointing afternoon at St Andrew's.
A first-half double from Auston Trusty and a second-half goal from Dion Sanderson secured all three points for Birmingham City.
Keziah Martin
Keziah Martin and his Kidderminster teammates suffered a second home defeat of the season in going down 2-0 to Farsley Celtic.
A goal in each half secured the points for the visitors on a day that never really saw Kidderminster find their groove in any way.
Dale Eve
Dale Eve recorded a shutout as he and his AFC Knowsley teammates put in a fantastic performance to ensure they got all three points edging Middlewich Town FC 1 – 0.
Kole Hall
Kole Hall and his Chester FC teammates fell 1 – 0 to Darlington at home.
Willie Clemons
Willie Clemons and his Braintree Town FC teammates fell 3 – 1 to Dover Athletic.
Ayleal Dill
Ayleal Dill's and his Radford FC teammates defeated Aylerstone Park 2 – 1 in a top-of-the-table clash. Dill entered the match in the 85th minute and with his first touch of the ball had it in the back of the net, but he was ruled offside.
Roger Lee
Roger Lee was an unused substitute as his Barwell FC teammates fell 3 – 1 to Gainsborough Trinity.
Quinaceo Hunt
Quinaceo Hunt and his Thornaby Football Club teammates fell 2 – 0 in their Northern League Division One clash with Bishop Auckland FC.
Reece Jones Jr. & Dashun Cooper
Reece Jones Jr., started while Dashun Cooper was an unused substitute for Hartley Wintney as they got late goals from Tom Leggett and Matt Drage, but they bowed out of the Isuzu FA Trophy after a penalty shootout.
Tevahn Tyrell
Tevahn Tyrell and his Billingham Synthonia FC teammates played to a 3 – 3 draw with Bedlington Terriers.