Most extras in an innings
Score Overs Ext b lb w nb Opposition Ground Match Date Scorecard
171/5 20.0 13 0 0 12 1 v RCB Kolkata 22 Apr 2011 T20
120/2 17.2 12 0 1 11 0 v Kings XI Kolkata 30 Apr 2011 T20
85/2 13.5 11 0 4 5 2 v Royals Kolkata 17 Apr 2011 T20
126/9 20.0 11 4 4 3 0 v Kochi Kolkata 20 Apr 2011 T20
163/4 20.0 10 5 2 3 0 v Chargers Kolkata 11 Apr 2011 T20
169/4 20.0 10 0 4 4 2 v Chargers Hyderabad (Deccan) 3 May 2011 T20
151/7 20.0 8 0 1 7 0 v Super Kings Chennai 8 Apr 2011 T20
148/7 20.0 8 0 2 6 0 v Daredevils Delhi 28 Apr 2011 T20
89/4 13.0 7 4 1 2 0 v RCB Bengaluru 14 May 2011 T20
175/7 20.0 6 1 2 3 0 v Mum Indians Kolkata 22 May 2011 T20
147/7 20.0 6 1 1 4 0 v Mum Indians Mumbai 25 May 2011 T20
119/3 16.4 5 0 1 3 1 v Warriors Mumbai 19 May 2011 T20
61/2 10.0 4 0 1 3 0 v Super Kings Kolkata 7 May 2011 T20
160/1 18.3 4 0 0 3 1 v Royals Jaipur 15 Apr 2011 T20
139/7 20.0 3 0 1 2 0 v Kochi Kochi 5 May 2011 T20

Team is the team credited with the extras, Opposition is the team that conceded them.

Records includes the following current or recent matches:
Kolkata Knight Riders v Mumbai Indians at Mumbai, Indian Premier League elimination final, May 25, 2011 [Twenty20]
Kolkata Knight Riders v Mumbai Indians at Kolkata, Indian Premier League 70th match, May 22, 2011 [Twenty20]
Pune Warriors v Kolkata Knight Riders at Mumbai, Indian Premier League 65th match, May 19, 2011 [Twenty20]