For the second successive week, Simon Betts converted a last-minute penalty to give Scarborough a share of the spoils in a game they should have won comfortably.
On paper, a 2-2 draw with high-flying leaders Yeovil looks good, but this was two points lost more than one point gained.
Boro have now gone ten games without a win but acting manager Neil Thompson may well be confirmed as the manager at a board meeting to be held on Thursday.
He had brought in on-loan goalkeeper Phil Priestley from Rochdale for Andy Woods, but the debutant was at fault with both goals.
Yeovil, managed by former Scarborough boss Colin Addison, took the lead five minutes before half time when Ben Smith's curling free kick seemed to confuse Priestley.
Before this, Priestley had saved well from another Smith free kick, while at the other end, Steve Brodie had been denied by the quick reactions of Tony Pennock in the visitors' goal.
However, five minutes after the break, Brodie's rapier-like run and cross gave Cherif Diallo the chance to score from close range for his fourth goal in five games.
The Senegalese striker is an awkward customer, but has the happy knack of being in the right place at the right time and is currently locked in contract talks with the club.
Yeovil regained the lead six minutes later when Andy Lindegaard punted a high ball towards the penalty spot.
Priestley approached with confidence and caught the ball, but then dropped it at the feet of Darren Way who rolled the ball into the empty net.
Whatever confidence Priestley had seemed to evaporate and when Dave Piper put another up-and-under into the Scarborough penalty area, Priestley dropped the ball again, but fortunately for him, it rolled just past the post for a corner.
Scarborough put on a barnstorming second-half display and Brodie had a header well saved by Pennock, but centre-back Shaun Rennison headed wastefully wide on two occasions.
Just when it seemed that Yeovil would escape with all three points, Paul Ellender forced the ball against the post from another corner and in the middle of a scramble, the referee spotted a Yeovil hand-ball and Betts kept his cool to score from the spot.
Addison, although frustrated by the last-gasp equaliser, conceded that a draw was a fair result.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules hereComments are closed on this article