Siraj must be thinking how did I get it wrong: Shastri on DRS

Speaking about Mohammed Siraj who took a failed DRS after being declared out LBW by on-field umpire, ex-India cricketer Ravi Shastri sarcastically said Siraj must be thinking how did he get that DRS wrong. Siraj had come out to bat as nightwatchman on Day 1 of third Test against New Zealand but was out for golden duck.