The former Sheffield Wednesday player cancelled out Luka Modric's opener four minutes before the interval.
Spurs had dominated the first half with Gareth Bale causing constant problems down the left flank.
However, they lacked the killer instinct in front of goal, and appeared to miss the influence of Jermain Defoe who will be out for three months with the ankle injury suffered on England duty.
It was a different story after the break with the Baggies more than matching their north London opponents and they came close on three occasions in the final 10 minutes to snatching a winner.
Source: PA