When Dinesh Karthik and Andre Russell failed to bowl in the slog overs, the Kolkata Knight Riders struggled to finish the games. Last year, both batsmen were unable to centre the ball in the majority of matches. Though KKR's middle-order appears to be reliable with Dinesh Karthik, there is a big question mark about who would fill Karthik's spot if he were to miss out for some reason.
Tim Seifert could take over as wicketkeeper from Dinesh Karthik. It's worth noting, however, that Seifert is an opening batsman. The Kolkata-based franchise will have to choose between Rinku Singh and Karun Nair in the finishers' segment and bench an Indian top-order batsman. Another choice is Pawan Negi, but he is a bowling all-rounder.
Sheldon Jackson is the Kolkata Knight Riders' backup Indian wicket-keeper choice. Sheldon has performed admirably for Puducherry, but his IPL record is less impressive. As a result, if Dinesh Karthik misses any games in IPL 2021, the Kolkata Knight Riders will be severely harmed.