In reply, RCB put up an below-par show, being restricted to 134/9, as they suffered their hat-trick of losses.
Dhoni and Smith were bowled off successive deliveries while Ben Stokes was also cleaned up. "Hopefully, I can keep entertaining and get a few more thousand runs under my belt". However, a quickfire 27 from Manoj Tiwary helped the Supergiants finish on 161/8 off their 20 overs.
Captain Suresh Raina came out next and he took the attack to the RCB straightaway, hitting two sixes and a boundary off the third over bowled by Sreenath Aravind.
Leg-spinner Samuel Badree broke the opening partnership as Rahane missed the length completely, allowing the ball to dismantle his stumps, with Pune at 63/1 in 7.4 overs.
The 37-year-old met out special treatment to left-arm spinner Ravindra Jadeja, milking him for 21 runs in his very first over before getting to his first half century of the season off a mammoth 104-metre six from chinaman Shivil Kaushik.
Gujarat faltered once again at the start, losing the key wickets of West Indian Dwayne Smith (1) and skipper Suresh Raina (23) to Chahal. Besides their inability to finish on a strong note - both with bat and ball - the think-tanks will be working to resolve the issues with the batting. While Jadhav cracked five fours and two sixes, Head hit two fours and a six in his innings.
Chasing a target as gargantuan as 214 set by the Royal Challengers, McCullum not only had to fire on all cylinders but also required support from the other end. In their two matches together, Kohli top-scored in game one while de Villiers did best among the RCB batsmen against Pune, though neither have played the kind of match-winning hand that saw them get within a stone's throw from the title a year ago. Kohli then took over soon after completing his slowest IPL fifty, off 43 balls.
The RCB bowlers were brilliant on the night.
The star power dimmed: Under the leadership of Watson, Bangalore claimed a shock-win over the Delhi Daredevils without AB de Villiers and Virat Kohli in the side, leading many to wonder what they could achieve with their best players fit and firing.
The likes of S Thakur (3/35), I Tahir (1/27), B Stokes (3/18) and J Unadkat (2/25) kept the pressure on for the entire duration of the bowling.
With five overs remaining, GL need 62 runs.
Brendon McCullum is averaging almost 40 in IPL 2017 and has provided the Lions with the ideal start.
Hailing the young spin duo of Pawan Negi and Chahal, the 28-year-old said: "Negi was outstanding, very courageous, not getting scared".