Bognor boss Michael Birmingham slammed his brother David as the Rocks drew 2-2 at Cambridge City.
Bognor led 2-0 thanks to Mark Knee and a Luke Nightingale penalty but David Birmingham conceded a spot-kick which was converted by Drew Roberts just before the interval before Seb Wallis-Taylor scored an own goal in the second half.
Michael Birmingham said: "It was a needless penalty to give away and it changed the game. We would have taken a point beforehand but we were disappointed in the end."
Bognor: Stoner, Balfe, Wallis-Taylor, Harris, Jupp, Breach, D Birmingham (Greatwich), Nightingale, Beck, Knee, Haddow. Subs not used: Killpartrick, Dunk, Sankoh.
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