METRICS GUIDE
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Johnny Walker's chin rating is 6.0 and he is moving up to heavyweight, where the men hitting him will be heavier than any he has faced.
Johnny Walker's chin rating reads 6.0. That is the number to start with, because everything else about this fight is a consequence of it, and because he has chosen to carry it up to heavyweight. All five of Walker's recorded recent bouts were at light heavyweight. Two of them ended with him being knocked out — Magomed Ankalaev in round two in January 2024, Volkan Oezdemir in round one that June —…
Walker (22-10) is 2-3 across his last five, all at light heavyweight, with knockout losses to Magomed Ankalaev and Volkan Oezdemir and a decision defeat to Dominick Reyes in April. His one recent highlight is a second-round TKO of Zhang Mingyang in August 2025. He is 34, with a 0.88 finish rate, a 55.5 quality-of-victory — the better of the two — and a chin rating of 6.0.
Parkin (10-1) has 5 recorded UFC fights, four of them wins, with his only defeat a decision to Marcin Tybura in March 2025 — his most recent appearance, eighteen months ago. Three of his four wins went to the judges. At 31 he carries a 98.0 chin rating and 77.5 momentum, but a quality-of-victory of just 33.8.
A 6.0 chin rating carried into a heavier division after two knockout losses at light heavyweight
Parkin's 7.6 volume score against Walker's 2.07 — who is scoring between the big moments
Walker's 7.6cm reach edge and 8.57 striking against a man with a 98.0 chin rating
Parkin's eighteen months out of competition since the Tybura decision
Parkin's 33.8 quality-of-victory against Walker's 55.5 — a genuine step up in opposition
Walker's 0.88 finish rate is the highest figure in this matchup; his fights rarely reach the cards and he only needs one connection
Parkin has never faced anyone with Walker's power or reach, and his 33.8 quality-of-victory says so
Eighteen months of inactivity is a real unknown for a fighter whose game depends on sustained output
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Combatrics radar — 6 fighting dimensions scored 0–10