Virat Kohli-led RCB are struggling at sixth position after two wins and as many as four defeats.
Coming off a heartbreaking loss against Chennai Super Kings, embattled Royal Challengers Bangalore, who have left themselves with little margin for error after a string of reverses, will face a test of character when they clash against Kolkata Knight Riders, in the Indian Premier League, in Bengaluru, on Sunday.
Virat Kohli-led RCB are struggling at sixth position after two wins and as many as four defeats, while KKR are placed fourth with three victories and four losses.
It remains to be seen how RCB have recovered from the painful defeat to Chennai Super Kings at the Chinnaswamy Stadium earlier this week.
Though having a much better season than their beleaguered opponents, KKR were also stunned by Delhi Daredevils on Friday, and the two-time champions will be keen to get back to winning ways.
Last time the two teams clashed, KKR successfully chased down a target of 177, thanks to Sunil Narine's blistering 19-ball fifty.
The spin trio of Narine, Kuldeep Yadav and Piyush Chawla also contributed to KKR's victory in the first match against RCB.
However, RCB will take heart from AB de Villiers' brilliant form this season. He smashed 68 off 30 balls against CSK, and the South African maestro also single-handedly downed Delhi Daredevils with his explosive batting.
He ripped apart Daredevils' bowling attack with an unbeaten 39-ball 90 to power his team to a convincing win.
After a brisk 57 and an unbeaten 92, skipper Kohli failed against CSK, and he would be eager to produce another special knock in this crunch situation.
Opener Quinton De Kock, who has scored 165 runs so far, would like to carry on with his good performance after he had smashed 53 off 37 balls in the last match.
But their death bowling has been a big concern and it remains to be seen what changes RCB make for this crucial encounter against KKR.
On the other hand, KKR, having lost to Delhi Daredevils by a big margin of 55 runs, will look to bounce back strongly.
Their bowlers first leaked 219 runs, and then the batsmen, save Andre Russell, struggled in the face of such a mammoth total.
The top guns -- Robin Uthappa, Chris Lynn and Dinesh Karthik -- will again need to live up to the expectations by contributing in a big way.
Uthappa (164), Lynn (191), Nitish Rana (173) and Karthik (212) have been scoring runs, twice taking the side past the 200-mark.
The Chinnaswamy strip is likely to test KKR's spinners while young Shivam, who was smashed for 29 runs by Shreyas Iyer, and England's Tom Curran are likely to shoulder the pace bowling responsibility.
Australian quick Mitchell Johnson has got four games and taken only two wickets.
Russell has done a fine job for them and has so far scored 163 runs, and bagged three wickets in eight games. His brute power would be of immense use on the small and batting-friendly ground.
Teams:
Royal Challengers Bangalore: Virat Kohli (captain), Quinton de Kock, Brendon McCullum, AB de Villiers, Sarfaraz Khan, Mandeep Singh, Chris Woakes, Washington Sundar, Umesh Yadav, Yuzvendra Chahal, Colin de Grandhomme, Moeen Ali, Pawan Negi, Mohammed Siraj, Corey Anderson, Parthiv Patel, Tim Southee.
Kolkata Knight Riders: Dinesh Karthik (captain), Andre Russell, Sunil Narine, Chris Lynn, Robin Uthappa, Mitchell Johnson, Piyush Chawla, Kuldeep Yadav, Shubman Gill, Ishank Jaggi, Nitish Rana, Vinay Kumar, Shivam Mavi, Tom Curran.