The four were quizzed about the stadium's history as the Jacksonville Jaguars prepare to host the San Francisco 49ers there this Sunday.
Four Jacksonville Jaguars cheerleaders were tested on their knowledge of the stadium ahead of Sunday's game against the San Francisco 49ers.
Menelik Watson, who has emerged as an unlikely new British star in American football, will embark on his professional career in Oakland.
Tinie Tempah and Gene Simmons were among the acts to perform in the lead up to the Minnesota Vikings' match against the Pittsburgh Steelers tonight at Wembley Stadium.
The Kiss bassist sung 'The Star-Spangled Banner' to a packed crowd prior to kick off.
Smoke billowing from timber doors welcomed the Minnesota Vikings to the Wembley field ahead of their clash against the Pittsburgh Steelers this evening.
The teams tweeted video and pictures of the atmosphere from the ground before kick off.
Wembley Stadium will tonight host the Minnesota Vikings and Pittsburgh Steelers in the first of two NFL International Series matches to be played in London this year.
The NFL has reached a tentative settlement of $765 million (£493m) over concussion-related brain injuries among former players.
The league has agreed to compensate sufferers, pay for medical exams and underwrite research - subject to approval by a federal judge - just days before the start of the 2013 season.
More than 4,500 former athletes - out of a total of 18,000 retired players - have sued the NFL since 2011, claiming the long-term dangers of concussion have been concealed and that injured players have returned to action too quickly.
NFL executive vice president Jeffrey Pash said: "This agreement continues our work to make the game safer for current and future players."
The league insisted safety had always been a top priority but came under pressure to act after former player Junior Seau, who had degenerative brain damage, committed suicide last year.
The Olympic British basketball star and Chicago Bull's player Luol Deng is just one of many athletes who have taken to Twitter to express their delight that Menelik Watson and Laurence Okoye have made the transition to American football.
Just heard @menelikwatson71 has been drafted into the NFL. This kid was a man child at my camps in the UK. Congrats man, very proud of you!
@luoldeng9 Appreciate it. Still remember what you said when I was younger. Trying to do for England in football what you do for basketball
Lawrence Okoye has signed with five-time Super Bowl champions the San Francisco 49ers, despite remaining undrafted by the end of this week's NFL Draft.
Okoye announced the news that he would be joining the team as an undrafted free agent via his Twitter account.
British linebacker Tom Wort was also not drafted.
Manchester's Menelik Watson, who has been selected by NFL side Oakland Raiders, will be a huge star of the future, according to his former basketball coach Graham Williams.