San Francisco 49ers' cornerback Shawntae Spencer met the London mayor Boris Johnson ahead of Sunday's clash with the Denver Broncos at Wembley Stadium.
Spencer, joined by 49ers' cheerleaders and club president Jed York, met Johnson at City Hall next to London's Tower Bridge.
Sunday's game will be the NFL's fourth regular-season game at Wembley Stadium.
Both teams have had a bad start to the season, the 49ers have lost six of their seven games so far, with the Broncos managing only one more win.
Denver players are only arriving to London on Friday (October 29).