the air line 435 when the goal post 1 is in the raised position as shown in fig1 2 a 3 a and 4 the first end 212 of the curved support 210 is substantially perpendicular to the playing field 10 and the second end 214 is substantially parallel to the playing field 10 when the goal post 1 is in the lowered position the first end 212 is substantially parallel to the playing field 10 and the second end 214 is substantially perpendicular to the playing field 10 in one embodiment when the goal post 1 is in the lowered position as shown in fig2 b and 3b each of the uprights 260 and the crossbar contact the playing field 10 when the goal post 1 is in the raised position the upper clevis plate lock pin bore 274 aligns with each of the lock pin clevis bores 362 the t shaped lock pin 350 is inserted through all three bores to maintain the goal post 1 in the raised position to collapse the goal post 1 from the raised position to the lowered position the pump 464 is actuated to drive hydraulic fluid from the reservoir 450 through the pump 464 the ball check valve 462 and the ball check valve 444 b to the upper chamber 410 a this moves.