Washington spurned a two goal lead as they fell 3-2 at home to Bishop Auckland on Saturday.
The hosts have now gone five games without a win since their 2-0 win against West Allotment Celtic.
Goalkeeper Dale Connor and full-back Reece Noble were absent from the side as a spirited first half performance saw the Mechanics take a 2-0 lead away to Bishop Auckland, before a second half collapse cost them dearly.
They took the lead after 11 minutes when a deep cross from Jake Fowler found Shaw, who headed the ball over Bishop’s Ed Wilczynski and into the net.
And they doubled their advantage in the 37th minute as Matty Waters out muscled his marker, brushing off another challenge, and firing a shot under the diving body of Wilczynsk which found the back of the net.
The home side pulled one back in the 42nd minute which would be the catalyst for a Bishop’s comeback.
Prolific goalscorer Andy Johnson was adjudged to have been fouled in the area, and the striker brushed himself off before converting from the spot.
Waters should’ve restored Washington’s two goal advantage as he pounced on a mistake in the 63rd minute by home defence, but scooped his shot over the bar.
The miss would prove costly as Bishop made the Mechanics pay for failing to deal with a corner.
Striker Johnson doubled his tally for the afternoon on 67 minutes finding the bottom corner of Dan Mullens net.
Bishop took the lead in the 73rd minute as Stuart Thompson smashed the ball into the top corner past the outstretched Mullen, after Johnson did well to hold off his marker.
Johnson grabbed his hattrick in the dying moments of the game, heading his 10th goal in four games past Mullen.