The century was Dhoni's third in Test cricket, a score which puts his side in an unassailable position with two days remaining at the Brabourne Stadium.
He still cares deeply about cricket in Zimbabwe and cannot believe the ICC have allowed Zimbabwe to resume Test cricket from January with such a poor side.
They may, however, decide to give Vaughan more time in county cricket before considering a recall to the Test side for the four-match series against Pakistan which starts in the middle of next month.