The Warriors have lost two matches on the trot by putting up a dismal batting performance.
On the other hand, the Royals go into their second away game after recording a clinically executed and morale-boosting 19-run victory over defending champions Kolkata Knight Riders at home, their second win in as many matches.
Therefore, the Warriors are the underdogs going into the clash and their stuttering batting line-up, which includes proven performers at the international level like Yuvraj, Ross Taylor and Marlon Samuels, needs to buck up and start firing.
How and when did he sustain the injury is not known and in his absence, the Warriors were restricted to a paltry 99 for 9 which was easily overhauled by Kings XI.
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Not only was Yuvraj missed as a main middle-order batsman, the Warriors were also handicapped without his clever left-arm spin bowling in the middle overs against Punjab.
However, things are looking brighter now as the dashing player is "feeling a lot better", said team spokesperson Deep Dasgupta.