The pitch from the two-day Boxing Day Ashes Test in Melbourne is rated as "unsatisfactory" by the International Cricket Council.

The pitch for the fourth Ashes Test in Melbourne has "done too much" and the result is in an "unfair" contest between bat and ball, says Michael Vaughan.

Some of the biggest names in Ashes cricket have attacked the state of the MCG pitch after a record crowd saw 20 wickets fall on a Boxing Day blowout in Melbourne