Loss of light heavy title, 1920.
On October 12, 1920, fifty-nine bouts later, and almost four years to the day after he took the title, he lost his championship in a fourth round knock out to France’s enormously popular Georges Carpentier in Jersey City, New Jersey. Before a crowd of 15,000, after a series of rights and lefts from Carpentier, Levinsky lost his title as he fell from a heavy right to the jaw, one minute and seven seconds into the fourth round. Levinsky received his largest purse of $25,000 for the fight. Carpentier had dominated the battle, and sent Levinsky down twice for counts of eight. Struggling to rise after being counted out, the vanquished Levinsky had to be brought to his feet and partly carried to his corner by Jack Britton, who had assisted him with the bout. 
Though not unique for his boxing era, Levinsky fought many of his opponents multiple times. According to historian Ken Blady, Levinsky fought Dillon a total of ten times in his career. Perhaps his worthiest opponent, Nat Fleischer once rated Dillon the third greatest Light Heavyweight of all time while boxing promoter Charley Rose placed him at #2. Levinsky met Jim Flynn, the only man to ever knock out Jack Dempsey, and heavyweight "Porky" Flynn a total of nine times. In his New York bout with Flynn on July 30, 1913, Levinsky's strong rally in the last round allowed him to end the match with a draw as Flynn had taken the third, fourth, seventh, eighth and ninth rounds.
Career record.
In an era when the winners of bouts could not be decided by the votes of referees and boxing judges, and titles changed hands only in the case of a knockout, Levinsky fought all comers, including losses to future heavyweight champions Gene Tunney and Jack Dempsey. 
He also fought the 1923 World Middleweight Champion Harry Greb at least three times between 1918 and 1919, successfully defending his Light Heavyweight title in each meeting. Levinsky loved to fight, although his claim to having fought close to 500 bouts has not been fully substantiated.
His official professional record: 287 bouts – won 196 (30 KOs), lost 54, drew 37.
In his early career, Levinsky was managed by Fred Douglas (1910–11) and Jack Hanlon (1911–13), and then fell primarily under the management of Dan Morgan until 1922. Al Lippe managed him in his comeback, from 1926–1929.
Life after boxing.
After his loss to Gene Tunney on January 13, 1922, Levinsky attempted to retire from boxing and entered the Real Estate business. Around 1926, he returned to the ring as a heavyweight after a series of financial losses and faced Tommy Madden, beginning his four-year comeback. He fought around forty-two times in his comeback, losing only twelve matches. After losing badly to Herman Weiner on January 15, 1929, he seriously discussed retirement before boxing one more time the following year in October 1930 in New York, beating Joe Simms in three rounds.
Levinsky's son Stanley was killed in the Battle of the Bulge, WWII. His daughter Harriet, a graduate and valedictorian at West Philadelphia High School, currently resides in Lancaster, PA. Levinsky's grandchildren are Stanley Solodky, Barry Solodky, and Susan Oldham. 
Levinsky invested much of his total boxing winnings of $250,000 in real estate, but lost most of it in the Depression of the early 1930s. During the height of the depression, in the mid-1930s Levinsky worked for the Works Progress Administration (WPA). After his retirement from the ring in 1930, he sold many of the remaining Apartment houses he owned, and purchased a Meat Slaughtering House in Chicago which he retained until around 1947, though continuing to live in Philadelphia. 
After an illness of several months that had been aggravated by a car accident on January 17, Levinsky died at his home on February 12, 1949 in Philadelphia, Pennsylvania at the age of 59. He was buried at Har Zion Cemetery. 
He was inducted into the Boxing Hall of Fame in 1966, and is in both the Pennsylvania Hall of Fame and Jewish Sports Hall of Fame in Israel.