Ten-man Hull City gained a point as Liam Rosenior's reign began with a battling performance at Millwall.
A tight game which saw both sides threaten turned eight minutes before the break when Colombia striker Oscar Estupinan was sent off for a reckless, high challenge on Charlie Cresswell.
But the Lions, who went close on three occasions through Zian Flemming, were unable to take advantage to earn a first win in three, despite plenty of pressure and having 24 attempts on target.
The Tigers stay in 21st place, but the point under Rosenior, who was only appointed on Thursday, ends a run of back-to-back losses.