MITCHELL Johnson took three wickets to provide a timely reminder of his abilities as Australia continued to dominate Kent in their tour match. Johnson’s Ashes spot is under threat after Mitchell Starc and Josh Hazlewood out-bowled him against West Indies, but he finished with 3-42.
Scores: Australia 507-8 decl’d; Marsh 114, Smith 111; Hunn 5-99. Kent 203-5: Key 87, Denly 36; Johnson 3-42).

Ex-England batsman Rob Key hit 87, but Kent slid to 203-5 at stumps.
Australia vice-captain Steve Smith had earlier retired on 111 as the tourists declared on 507-8.
Left-armer Johnson was England’s nemesis in the Ashes whitewash down under in 2013-14, taking 37 wickets in five Tests.
But the performances of Hazlewood and Starc in the Caribbean, and the return of right-arm seamer Ryan Harris, left him with something to prove on another warm day in Canterbury.
It did not take long. At the end of a fiery first over, Kent opener Daniel Bell-Drummond was pinned lbw to give Johnson his first wicket of the tour with just his sixth ball of the day.
Riding their luck at times, Key and Joe Denly withstood the remainder of a testing opening spell from Johnson and Harris to put on 81 for the second wicket.
After Denly was dismissed by Peter Siddle for 36, Northeast and Key added a brisk 59, only for Northeast to glove the third ball of a new Johnson spell to wicketkeeper Brad Haddin.
Key, who played the last of his 15 Tests in January 2005, bludgeoned three fours in five balls off struggling leg-spinner Fawad Ahmed to move within sight of a century.
But his aggression proved his downfall, as he lobbed the last ball of the over to Shaun Marsh at midwicket.
Johnson showed his potency once again in clean-bowling Ben Harmison for five, but a gutsy unbroken stand of 35 between Sam Billings and Adam Ball guided Kent, who were 140-2 at one point, to the close without further damage.
Earlier, Smith picked up where he left off on Thursday as he breezed to a century from 151 deliveries.
Two boundaries later, Test cricket’s top-ranked batsman retired to give someone else a turn.
That someone was Mitchell Marsh, whose effortless strokeplay contrasted sharply with the travails of Shane Watson, his rival for an Ashes place.
Watson fell to a spectacular one-handed catch by Denly for 21, before Marsh had his off stump uprooted by Matt Hunn to end a 26-ball innings of 30.
Hunn, who plays most of his cricket for Sandwich Town in the Kent Premier League, picked up figures of 5-99 in his first Kent outing of the season.
The 21-year-old was then applauded from the field after Australia declared following quick runs for Haddin (35) and Johnson, who finished unbeaten on 32. (BBC Sport)