London - Andre Villas-Boas was denied a first win as Tottenham boss when James Morrison cancelled out Benoit Assou-Ekotto's goal to earn a last minute 1-1 draw for West Brom.
Tottenham dominated for large swathes of the match at White Hart Lane as they sought to get off the mark for the fledgling season after last weekend's opening loss at Newcastle.
Villas-Boas handed Jan Vertonghen his first start, the former Ajax captain coming into the side in place of the injured Younes Kaboul.
Striker Emmanuel Adebayor started on the bench after joining Spurs on a permanent contract following last season's loan deal with Manchester City.
The first half was all Spurs, with Wales winger Gareth Bale in superb form, but West Brom keeper Ben Foster was only called into action once.
Vertonghen was at the centre of one of the home side's best moves when he spread the ball wide, and then ran up to latch onto a cross only for the Belgian centre-half to shoot over the bar.
After the interval, Bale failed to connect cleanly with a sweeping pass from Rafael van der Vaart, while Assou-Ekotto had a free-kick kept out by Foster.
Shortly after Adebayor had been introduced for van der Vaart, Tottenham had the ball in the net only for Jermain Defoe's close range shot to be ruled offside.
Down at the other end only a fingertip save from Brad Friedel denied Romelu Lukaku from giving West Brom the lead against the run of play.
Two minutes later Friedel kept out a shot from Marc-Antoine Fortune.
Spurs finally broke the deadlock in the 74th minute when Assou-Ekotto drove a 25-yard shot past Foster with the ball taking a deflection on its way into the back of the net.
But they squandered the welcome three points in the final minute of the game when multiple failed attempts to clear a corner cost them dear, with Morrison making the most of the poor defending to shoot into the corner from 10 yards on the whistle.