An Ethan Prichard wunder-goal and a 78th minute equaliser from Isaac Bello instigated a dramatic come-back with Chichester putting in a resounding second half performance.
Strikes from leading goal scorer Jimmy Wild and Ethan Prichard (2), alongside an impressive performance to a man, allowed Chichester City to bounce back and overcome fourth placed Billericay Town at Oaklands Park.
The official matchday programme for the Billericay Town game is now available.
It was a bad day at the office as Chichester suffered their heaviest defeat of the season at Oaklands Park to Hashtag United.
A Horsham equaliser with seven minutes of normal time to go denied Chichester all three points in this lively encounter at Oaklands Park after Jimmy Wild put the hosts ahead from the penalty spot earlier in the second half.
Two goals from top scorer Jimmy Wild either side of half time and a Curtis Da Costa strike helped Chichester record their first ever home and away league double at Step 3.
Chichester suffered a consecutive 2-1 league defeat away from Oaklands Park and were reduced to ten players when Worthing loanee Finlay Chadwick was sent off five minutes before half time.
Second half goals from James Hammond and Chris Dickson took holders Horsham through to the next round of the Sussex County Cup despite having keeper Brad House sent off late on.