Darren Byfield's late equaliser saved Millwall as Nigel Spackman's side battled back for a draw.
Yeovil dominated the first half and led at the break after Wayne Gray converted Chris Cohen's 35th-minute cross.
But after the break Millwall were much better, even through Kevin James came close to winning the game for Yeovil.
Then in the 81st minute Byfield, who was the Lions' best player in the second period, finally grabbed his side a leveller from Tom Brighton's cross.
Millwall: Pidgeley, Ross, Shaw, Whitbread, Craig (Ardley 42), Williams, Elliott (Hackett 87), McInnes, Morais (Hubertz 79), Byfield, Brighton.
Subs Not Used: Day, Robinson.
Goals: Byfield 82.
Yeovil: Mildenhall, Lindegaard, Skiverton, Forbes, Jones, Barry (James 67), Terry, Davies, Cohen, Gray (Poole 72), Harrold.
Subs Not Used: Guyett, Kamudimba, Morris.
Goals: Gray 35.
Ref: D Gallagher (Oxfordshire).