ARGYLE'S hopes of holding on to top spot in Merit League One took another knock as, for the second week running, they drew another home game 0-0.
Last week it was deadly rivals Exeter City who succeeded in shutting Argyle out and this occasion it was a physically strong Posh outfit who achieved a point on their travels.
Once again it was the visitors who shaded the first half possession and they could have taken a 10th minute lead until Aaron Taylor, deputising for the injured Owen Jones, got in a saving tackle.
Argyle came more into the game as the half wore on with Callum Hall's good run ending with the tricky winger firing wide from 20 yards.
A great run by Louis Rooney saw his cross find Hall coming in at the far post but his header went straight into the midriff of goalkeeper Henrich Raves.
Peterborough hit back with Toby Adebayo-Rawlings fire over the Argyle crossbar from close range and the second half began with Pilgrim's 'keeper Cory Harvey making a brave save at the feet of Jonny Edwards.
That was practically the last seen of the Posh attempts on goal as Argyle gained the upper hand with Billy Palfrey's cracking angled drive flying just wide of the far post. Ben Steer was next to fire over Raves goal, after good play by Hall had set him up 15 yards from goal.
Argyle brought on Northern Ireland under-17 International Dan Rooney and he certainly made a difference in the midfield as his battling ended with his older brother Louis firing just wide from 20 yards. Dan then sent his brother racing in from the angle of the box to send in a great drive that Raves somehow deflected over his bar.
Louis then returned the favour as he sent Dan running into the area where he was brought down but the referee ignored Argyle claims for a penalty.
Argyle had one final chance to take all three points but Hall sliced his shot wide from 15 yards.
Argyle: Cory Harvey, Mason Hughes, Jack Calver (Jamil Roberts 78), Will Sargemt, Aaron Taylor, Tom Moxham, Billy Palfrey, Callum Hall, Jason Vincent (Alex Fletcher 80), Louis Rooney, Ben Steer (Dan Rooney 68).