The visitors struggled to keep hold of the ball in the testing conditions but a further Davis penalty reduced their deficit and kept the home fans on tenterhooks, and their nerves jangling.
Canada, who are also through to the Super 8 stage, had Bagai's fine 122-ball innings to thank for a testing total, and Sunil Dhaniram chipped in with 41.
The Premier League new boys took every opportunity to shell the ball into the Villa box, with Delap testing out keeper Brad Friedel's resolve with his artillery-distance throws.
Somehow there was still time for Tremlett to get in on the act, and he did it by taking wickets with consecutive deliveries, Brad Haddin edging yet another testing delivery to Prior before Johnson was bowled first ball.
Instead, we must look at it from the perspective that the modified drug testing program is indeed working and staying one step ahead of those deceptive ball players who are infatuated with accumulating artificial statistics and defrauding owners of millions of dollars.