MELBOURNE, Australia — England paceman Tom Curran will make his test debut at the Melbourne Cricket Ground against Australia on Tuesday, replacing the injured Craig Overton, who has a fractured rib.

England skipper Joe Root says South-African born Curran is a "feisty character" with an impressive work ethic.

Curran, an uncapped right-arm bowler, was only added to England's Ashes squad when Steve Finn was ruled out at the start of the tour due to injury.

The 22-year-old Curran played a one-day international and three Twenty20 matches for England earlier this year.

Australia regained the Ashes with a win in the third test at Perth, its third straight in the five-match series.

Meanwhile, a sore hand may force Australia captain Steve Smith to tweak his approach during the fourth test.

Smith was on the wrong end of a freakish injury scare on Sunday when a ball driven by Cameron Bancroft burst over the nets and struck him on the right hand. Smith, waiting to bat at the time, wasn't wearing gloves.

Smith, who boasts a test average of 127.6 at the MCG after posting centuries in the past three Boxing Day games, had a short hit on both Christmas Eve and Christmas Day.

Smith admitted he still wasn't 100 percent.

"It was a little bit sore today playing a few different shots," he said Monday. "But I'll be able to deal with it and I'll get on with it. Maybe I'll just have to use a bit more of my top hand throughout the game, a bit less wristy."Australia has replaced left-handed fast bowler Mitchell Starc, who has a bruised right foot, with Jackson Bird.

AP