Millwall recorded a 3-1 success at Bradford City in their Sky Bet League 1 Play-Off semi-final first leg.
The Lions initially fell behind when Tony McMahon converted from the penalty spot after Joe Martin handled.Martin made amends, however, scoring a sublime left-footed free-kick on the stroke of half-time.
That came after Millwall front men Lee Gregory and Steve Morison had already turned the tie on its head, scoring two quickfire goals to stun the home crowd.
Phil Parkinson’s Bantams put the pressure on in the second half but the Lions held firm.
That means Neil Harris’ side head back to The Den for their Friday night second leg with a healthy 3-1 advantage.