England provide glimmer of hope amid the wreckage of their Ashes campaign on day four of final Test

Remarkably, Bethell had never previously registered a first-class hundred, making his achievement all the more impressive against Australia's attack.

Stuart Broad, commentating for Channel 7, described the youngster as a "diamond", while England's official X account labelled him "Starboy".

Though his superb knock may prove insufficient to alter the series outcome, it demonstrated that Bethell will form a crucial part of England's future plans.

The day's positive developments were overshadowed by yet another injury blow to England's beleaguered squad.

Captain Ben Stokes departed the field grimacing during the morning session after managing just four deliveries of his second over with the ball.

A team spokesman confirmed the 34-year-old was undergoing assessment for a "right adductor complaint", with Harry Brook assuming leadership duties as Australia were dismissed for 567.

Stokes had surpassed 100 overs bowled for the series before his body gave way, adding to a troubling catalogue of fitness issues including hip, knee, hamstring and shoulder problems over recent years.

His breakdown means four English seamers have succumbed to injury during this gruelling tour, with Mark Wood sidelined by knee trouble, Jofra Archer suffering a side strain, and Gus Atkinson picking up a hamstring complaint.

Bethell's innings was constructed with remarkable composure for someone so inexperienced at this level. He shared partnerships of 81 with Ben Duckett, 32 with Joe Root, and an impressive 102 alongside Harry Brook as England gradually eroded Australia's advantage.

The young batsman reached his half-century with a crisp cut shot when Mitchell Starc erred with his line, and continued accumulating runs through elegant drives and efficient work to the leg side.

As he approached three figures, nerves briefly surfaced when he almost attempted an ill-advised single on 99.

However, he settled the matter decisively with his next delivery, advancing down the pitch to Beau Webster and launching the ball over wide long-on for his 13th boundary.

While Bethell celebrated with restraint, his father Graham led more emotional scenes in the stands.

England's position had appeared precarious from the outset of their second innings, with Mitchell Starc dismissing Zak Crawley in the opening over for just one run, the left-armer's fourth first-over success in five Tests.

The threat of an innings defeat loomed large at the SCG, but Bethell and Duckett steadied matters before wickets tumbled around the young centurion.

Duckett fell for 42 when he played Michael Neser onto his stumps, while Root's strong series ended disappointingly as Scott Boland trapped him leg before for six.

Brook contributed 42 before Webster's off-spin found a way through, and Will Jacks departed for a duck.

Jamie Smith was run out following a miscommunication with Bethell, before Stokes walked out stiffly, lasting just five balls before edging Webster to slip for one.

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