Ashes 2017: Alastair Cook's 5th Test double ton puts England in commanding position in Melbourne Test

Alastair Cook shrugged off poor form to score a record-breaking double century and put England in full command of the fourth Ashes Test with a formidable 164-run innings lead in Melbourne on Day 2.

The stoic opener emphatically bounced back after a lean run of scores to finish the day unconquered on 244 off 409 balls. At the close, England were 491 for nine.Along the way, Cook surpassed the highest score by a visiting batsman in a Test match at the famous Melbourne Cricket Ground, bettering the 208 by West Indian great Viv Richards in 1984.

He earlier bettered Wally Hammond's 200 set back in 1928 as the highest Test score at the MCG by an Englishman.Cook's fifth double-century in 151 Test matches also catapulted him above West Indian Brian Lara to become the sixth highest run-getter in Test cricket with 11,956.

Australia, who already have won back the Ashes with an unassailable 3-0 lead, looked unable to stop the flow of runs in the final session as Stuart Broad supported Cook to take the game away from the hosts.Broad, who survived a series of hair-raising short-pitched balls, thrived in his partnership with Cook, pushing the tourists beyond 450 on a lifeless pitch.

It needed multiple replays before Broad was finally given out for 56 off 63 balls to a diving outfield catch by Usman Khawaja off Pat Cummins, ending a demoralising 100-run stand off 110 balls with Cook.

Cook cashed in on two dropped catches by Australia skipper Steve Smith along the way to continue the misery for the home side.Smith, who dropped Cook on 66 in the slips on Wednesday, put down the former England skipper for the second time on 153 in a sharp right-handed chance at square leg.

The tourists lost seven wickets for 299 on the third day with captain Joe Root again failing to convert a half-century into three figures when he top-edged a hook shot off Cummins to Lyon at the deep square leg.

Root reached his third half-century of the series but was clearly furious with himself when he holed out on 61 in the morning session.