Harry Redknapp's side put in a strong defensive shift to deny Spurs three points, with Julio Cesar making a world-class double save to deny Jermain Defoe and Emmanuel Adebayor
Redknapp's side was determined and organized at the back yet lacked a clear cutting edge up front as they have so often this season, while Spurs pressed for a winner but failed to find a way through a resilient defense.
The derby started quietly but sprang into life after five minutes as Julio Cesar made a world-class double stop to deny both Jermain Defoe and Emmanuel Adebayor in quick succession.
Defoe was allowed to find time and space to hit a vicious effort from 20 yards which the Brazilian brilliantly tipped onto the post, and Adebayor's follow-up was expertly stopped by the 33-year-old when the striker should have scored.
Not to be outdone in the early stages, Wright-Phillips also had an excellent chance to put the hosts ahead after 11 minutes after a delightful through-ball from Adel Taarabt.
The Moroccan found the winger's clever run in behind the Spurs back line, and as Wright-Phillips set to finish, only a crucial deflection from Michael Dawson prevented the former Chelsea winger finding the near corner of Hugo Lloris' net.
Save for those efforts, the opening exchanges were cautious with little in the way of genuine excitement at either end.
Villas-Boas was forced into an early substitution with Sandro being replaced by Scott Parker after appearing to damage his knee hooking a half-volley forwards, with the midfielder in obvious discomfort.
Wright-Phillips fashioned a chance on 45 minutes after great work from the left wing but fired wastefully wide with Taarabt a better option in the middle as the first half drew to a disappointing close.
Spurs flew out of the blocks from the restart - Defoe earned a free kick a minute in after a clumsy foul from Nelsen, and Bale tested the Cesar with a dipping effort to signal Spurs' intentions.
Lennon won a contentious free kick on the left-hand side of the area moments afterwards, which Kyle Walker put inches over the bar with Cesar motionless.
A minute later Defoe again worked space and was denied an opener by the legs of Cesar, and the hosts failed to create anything of note with Jamie Mackie isolated up front.
Defoe's clever flick on 67 minutes released Adebayor but although the tall forward found himself space, he delayed his effort and the chance was wasted, with Villas-Boas reacting by substituting him a minute later.
Taarabt unleashed Wright-Phillips in a rare break for the hosts with 13 minutes remaining, but Lloris was alert to the danger and rushed out to clear the ball.
The diminutive QPR winger should have perhaps won the game with six minutes remaining but scuffed the turf instead of shooting, but Redknapp's side will welcome a much-needed point.