Redknapp's side move ahead of Newcastle on goal difference after a comfortable victory over a lifeless Rovers team who failed to manage a single attempt on goal
Spurs dominated the game throughout the 90 minutes and thoroughly deserved the three points against a demoralised Blackburn side.
The hosts took the lead with Rafael van der Vaart's scrambled effort midway through the first half, before sealing the victory with 15 minutes to go thanks to a fantastic free-kick by Kyle Walker.
Harry Redknapp was forced to make two changes from Spurs' FA Cup semi-final loss against Chelsea with Benoit Assou-Ekotto ruled out for the rest of the season with a shoulder injury and Scott Parker missing out with an Achilles problem. Danny Rose made his first start of the season and Sandro was also recalled to the starting line-up.
Steve Kean named the same starting line-up that beat Norwich last weekend with Yakubu supported by Junior Hoilett in attack.
Spurs got off to a bright start and should have taken the lead in the second minute through Aaron Lennon, Luka Modric drove through three defenders down the left before sliding a dangerous ball across the face of the goal to pick out Lennon, but the winger got his feet in a muddle and squandered the chance.
The hosts dominated possession in the first quarter of an hour and were the width of a crossbar away from taking the lead. Sandro showed good strength to hold off a challenge and then fired in a shot from 25 yards out rattling the frame of the goal with Paul Robinson well beaten.
Blackburn found it difficult to get out of their half as they defended wave after wave of Tottenham attacks with Spurs continually exploiting space in the wide areas.
The breakthrough eventually came in the 22nd minute. Lennon was allowed space on the right to stand the ball up at the back post which was headed back across the goal by Bale and deflected on to the bar by Scott Dann, the ball eventually turned home after a goal-mouth scramble by Van der Vaart.
Lennon wasted a glorious chance to double the hosts lead a moment later as he skipped across the pitch in a three-on-three counterattack but opted to take the shot, rather than pick out Emmanuel Adebayor and blazed his shot well over.
Spurs wasted another chance to deservedly double their lead just before the break as William Gallas’ header came off the bar after a succession of corners.
The first-half performance from Tottenham was reminiscent of their blistering early season-form with Modric providing the cutting edge in centre of midfield and the combination of Bale and Lennon working as good outlets in the wide areas.
Meanwhile, Blackburn spent most of the half pegged back in their own half with ten men behind the ball but enjoyed their best spell of possession at the beginning of the second period but didn’t manage a meaningful attempt on goal.
Tottenham were soon on top again though as the visitors, despite being a goal down and in a perilous position in the relegation battle, failed to show any attacking impetus or desire to win the ball back.
Spurs had half chances to create some breathing space between the sides but both Bale and Modric dragged their efforts wide from decent shooting positions whereas Blackburn had yet to manage a shot on goal.
With his side desperate for a goal in the fight for survival, Steve Kean substituted Blackburn's top scorer Yakubu with 20 minutes to go. The Nigerian barely had barely had a kick in the game and was replaced by Anthony Modeste.
The second goal eventually came in the 75th minute and it was well worth the wait for the Spurs supporters. Van der Vaart stood over a free-kick from 35 yards out, when suddenly Walker ran up to the ball and whipped an incredible free-kick into the top right-hand corner of the net.
Rovers failed to muster a single effort at Brad Friedel as time ran out and now sit three points adrift in 19th place with just two games remaining.
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