Plymouth's on-loan goalkeeper David Button saved a first-half penalty as his side extended their unbeaten run to four matches in a 0-0 draw with Yeovil.
Button, on loan from Tottenham, dived low to his right to keep out Sam Williams' spot-kick after Andy Williams had been fouled by Curtis Nelson in the 28th minute.
Yeovil had the better of the south west meeting at Home Park, where the Glovers' new loan signing Paul Wotton nearly scored early on.
The former Argyle skipper let fly with a speculative 30-yard effort that whizzed just wide of Button's left post in the eighth minute.
Argyle's Joe Mason looked lively and it needed a block by Yeovil captain Paul Huntington to deflect the youngster's 18-yard shot over the bar.
League One's 12-goal top scorer Bradley Wright-Phillips unselfishly teed up Reda Johnson during a goalmouth scramble but he looped his shot from close range over.
Yeovil countered with Dean Bowditch forcing Button to make another spectacular save, diving to his right to turn around the 25-yard angled drive as it ended all-square.
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