Matt Renshaw, who was added to the World Cup squad on Saturday in place of Short, holed out to long off on 2 to left-arm spinner Mohammad Nawaz's fuller delivery.
"They put us under great pressure in the powerplay," Marsh said. "It was probably a 160-170 wicket."
Earlier, Agha was aggressive in his recent transformation at No. 3 as Pakistan sped to 72-2 inside the powerplay. Agha reached his half-century in just 25 balls while dominating the spin through strong sweeps and lofting the fast bowlers inside out over extra cover. Agha hit four sixes and eight boundaries
Babar Azam continued to struggle at his new No. 4 batting position and was pinned lbw by Adam Zampa on 2.
Usman picked up after Agha left with a brisk half-century before he fell in the final over after holing out at deep midwicket.