And it's now 12 goals in their last three outings for Spurs as they weathered a barrage of pressure on the visit to the Reebok Stadium.
But Redknapp knew before kick-off his side faced a tough test against a side had gone four games unbeaten in the Premier League.
Ricardo Gardener gave the hosts a welcome fourth minute lead with a sweet strike, only for another Croatian, Niko Kranjcar, to bag his first goal of the season to level matters in the 34th minute.
But Kevin Davies looked to have secured maximum points for Gary Megson's side when he headed the Trotters back into the lead in the 69th minute.
However, just four minutes later defender Corluka pounced to spare the visitors blushes and made sure honours were even at the final whistle.
And it was Spurs who had the better chances in the last quarter of the came as they nearly came away from their trip to Lancashire with full points.
Megson's men had the perfect start when Chung-Yong Lee delivered a delightful cross for Gardner and the midfielder fired into the root of the net.
Tamir Cohen then went close to doubling the home side's advantage, but his right-foot shot was straight at visiting keeper Carlo Cudicini.
Gardner tried his luck from 30 yards midway through the half, but his effort flew well wide.
Kranjcar then had a shot blocked at the other end after a solid saving tackle from Zat Knight.
But in the 34th minute Kranjcar rifled a right-foot shot into the bottom left-hand corner after a lovely pass from Peter Crouch.
Cohen had a shot over the bar as the hosts looked to restore their lead, before in the second half Davies forced a smart stop from Cudicini.
Crouch fired wide close to the hour mark and Jermaine Jenas wasted a good chance, before Davies headed Cohen's cross beyond Cudicini to make it 2-1.
However, Corluka popped up four minutes to restore parity once again and the Spurs pushed hard for a winner.
Matthew Taylor had a shot tipped round the post by Cudicini, while moments earlier Crouch had a header saved by Jussi Jaaskelainen.
Crouch also forced a good save from the keeper in the last minute of the game, but both sides had to settle for a point each.