England's preparations for their US$20 million match against Stanford Superstars on Saturday has been affected with a few players hit by a stomach bug.

Stuart Broad, James Anderson, Luke Wright and Ryan Sidebottom all missed England's final warm-up against Trinidad & Tobago on Tuesday, and there were also injury concerns for Owais Shah and Matt Prior.

Shah tweaked his ankle while sliding in the outfield, while Prior took a blow on the elbow. Middlesex's Dawid Malan and Steve Finn were called up for 12th man duties during the Trinidad game, although neither have been officially drafted into the party.

Despite the stomach bug, England scraped home with a thrilling one-run victory, as Trinidad's tail couldn't quite chase down 141.