Close of play - Eng 491-9published at 144 overs
Lead by 164
Marsh sends down four innocuous deliveries that Cook just nudges away.
The tired Aussie fielders finally jog in, trying to stop Cook picking up the single that will return him to the strike tomorrow morning.
Cook isn't fazed - instead driving Marsh deliciously through cover for four. That takes him past Brian Lara into sixth in the all-time ranking for Test runs. He's surpassed some fine players in this innings.
He drives the final ball of the day to mid-off for no run. Well played that man.