Leyton Orient continued their promotion push with victory over Darlington.
Shane Tudor scored the decisive goal after 13 minutes, cutting in from the right flank and curling a superb shot into the top corner.
O's defender Gabriel Zakuani then twice blocked shots from Carlos Logan as the visitors pressed.
Orient missed a first-half penalty when Matt Lockwood's shot was saved by Sam Russell and Darlo had Matty Appleby sent off late on for a second caution.
Leyton Orient: Garner, Miller, Lockwood, Mackie, Zakuani, Tudor, Simpson, McMahon, Keith (Barnard 77), Alexander (Ibehre 58), Connor.
Subs Not Used: Tann, Steele, Morris.
Booked: Mackie, Barnard.
Goals: Tudor 13.
Darlington: Russell, Valentine, Stockdale, Appleby, Martis, McDermott (Wainwright 56), Logan (Sodje 66), Keltie, Dickman, Bates (Peacock 72), Cooke.
Subs Not Used: Janes, Norton.
Sent Off: Appleby (90).
Booked: Appleby, Cooke, Keltie, Stockdale.
Att: 4,767.
Ref: J Moss (West Yorkshire).