Definition: In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].
Input: He might have only just learned to write his own name, but Wayne Rooney's five-year-old son Kai had an opportunity to show off his skills with a pen when signing autographs at Old Trafford on Sunday. The Manchester United captain's son was mascot for the 3-0 Barclays Premier League win over Tottenham Hotspur, and his dad's celebrity status seems to be rubbing off a little - at least in the eyes of Manchester's autograph hunters. Kai was spotted signing for fans by the Old Trafford dug-out before his dad netted United's third in the comprehensive victory that kept United in the Premier League's top four which will be remembered for Rooney's 'knockout' celebration.Wayne Rooney's son Kai was mascot for Manchester United on SundayUnited beat Tottenham 3-0 at Old Trafford to keep control in the top fourKai was seen signing autographs for fans at Old Trafford, just like his dad 
 Question:_ falls backwards as if knocked out in a nod to the video released of him in Sunday's newspapers.

Wayne Rooney