Original sentence: With a streak of 23 knockouts that spanned from 2008 to 2017, he holds the highest knockout-to-win ratio – 89.7% – in middleweight championship history, as well as the longest active unified championship reign, with five consecutive defenses, meanwhile ending twelve 6+ winning streaks of his opponents and stopping 4 previously undefeated boxers
Edited sentence: His exceptionally strong chin and general toughness has earned him recognition worldwide With a streak of 23 knockouts that spanned from 2008 to 2017, he holds the highest knockout-to-win ratio – 89.7% – in middleweight championship history, as well as the longest active unified championship reign, with five consecutive defenses, meanwhile ending twelve 6+ winning streaks of his opponents and stopping 4 previously undefeated boxers