John Ruiz, known as "The Quiet Man," was born on January 4, 1972, in Methuen, Massachusetts, and built a legacy as one of the most determined heavyweights of his era. Standing 6 feet 2 inches tall with a reach of 78 inches, Ruiz competed as an orthodox fighter throughout his career. He began his professional journey on August 20, 1992, defeating Kevin Parker via unanimous decision over four rounds at the Trump Taj Mahal in Atlantic City.
Ruiz's early career showed promise. He amassed a 14-fight winning streak before suffering his first defeat on August 12, 1993, against Sergey Kobozev in a split decision. Despite setbacks, including losses to Danell Nicholson for the vacant IBO heavyweight title in 1994 and a first-round knockout at the hands of David Tua in 1996 for the WBC International heavyweight title, Ruiz persisted in his quest for championship success.
The turning point in Ruiz's career came in 2000 when he faced Evander Holyfield for the vacant WBA world heavyweight title. Although he lost by unanimous decision, Ruiz's performance earned him a rematch. On March 3, 2001, Ruiz made history by defeating Holyfield via unanimous decision, becoming the first Latino heavyweight champion in boxing history. Their trilogy concluded later that year with a split draw in December.
Ruiz successfully defended his WBA title against Kirk Johnson in 2002, winning by disqualification in the 10th round. However, on March 1, 2003, he faced Roy Jones Jr., who moved from light heavyweight to challenge for the heavyweight crown. Ruiz was outboxed over 12 rounds and lost his title by unanimous decision. Later that year, Ruiz captured the interim WBA title with a win over Hasim Rahman, setting up his second reign as champion.
In 2004, Ruiz secured notable victories, including an 11th-round technical knockout over Fres Oquendo and a unanimous decision against Andrew Golota. Despite his achievements, Ruiz's style often drew criticism, characterized by clinching and methodical tactics, but his effectiveness was undeniable.
Ruiz's title reigns ended in 2005 with a majority decision loss to Nikolai Valuev, marking the beginning of the final chapter of his career. After a series of bouts, Ruiz faced David Haye on April 3, 2010, at the M.E.N. Arena in Manchester for the WBA heavyweight title. Ruiz was stopped in the ninth round, signalling the end of his career with a professional record of 44 wins (30 by knockout), 9 losses, and 1 draw.
Throughout his career, Ruiz's resilience and dedication defined his path. Facing world-class opposition like Holyfield, Jones Jr., Rahman, and Haye, he established himself as a rugged and reliable competitor in the heavyweight division, leaving a legacy that remains significant in boxing history.