Plymouth head coach Paul Mariner admitted his side only had themselves to blame for the 2-0 defeat by QPR at Loftus Road.
Adel Taarabt netted the opener in the 35th minute from the penalty spot and Damion Stewart's goal three minutes after the interval confirmed the win for Rangers.
Mariner said: "It was a poor penalty to give away and then we let another in after 48 minutes. In our position we can't keep shooting ourselves in the foot."
Roberto Di Matteo
West Brom head coach Roberto Di Matteo was pleased with the patience shown by his side after they left it late to beat Sheffield Wednesday at The Hawthorns.
Robert Koren, a half-time substitute for Jerome Thomas, struck the only goal from 30 yards in the 79th minute to lift Albion above Nottingham Forest and put them two points clear in second place.
Di Matteo said: "We created a number of chances in the second half but their goalkeeper made some great saves. We were a little bit nervous in the first half but in the second half we stayed patient and passed the ball better."
Peterborough boss Jim Gannon has ruled out any hope of his side being able to avoid an instant return back to League One.
Despite a 1-0 victory over Sheffield United at London Road, courtesy of Craig Mackail-Smith's header, rock-bottom Posh remain 11 adrift of safety and Gannon will not go back on his assessment after Saturday's defeat to Coventry that his side are not good enough to stay up.
"I think it was important to be brutally honest. I wasn't playing any reverse psychology on Saturday," he said.
"I genuinely feel we won't pick up the results we need but all I want us to do is show fighting spirit."
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