Wrexham will have to wait until Saturday before they know their play-off opponents after being held to a draw by Braintree at the Racecourse.
Andy Morrell gave the Dragons the lead with a superb chip in the third minute, but Ben Wright equalised with a sweet strike in the 18th minute.
Wrexham dominated the second half, but could not find a winner.
And their top-scorer Danny Wright is out for the rest of the season after suffering a dislocating an elbow.
VIEW FROM THE DRESSING ROOM
Wrexham manager Andy Morrell told BBC Radio Wales: "I don't know if I've walked under a ladder or in front of a hundred black cats because our luck at the moment is horrendous.
"I feel for Dan [Wright] because he deserves to be in the play offs. It couldn't have been a worse night. To say I'm depressed is an understatement.
"I simply can't send my strongest team to Mansfield on Saturday. The play-off on Tuesday or Wednesday is too important, so we'll have to suck it up and see.
"I don't want to hand the title to anybody, I don't want to do anything like that, I'll send what I can but I can't risk losing any more players because I haven't got 11 to put out."