JULIO CESAR CHAVEZ holds records for most successful defenses of world titles (27) and most title fights (37). Chávez also holds the record for the longest undefeated streak in boxing history. His record was 90-0-1 going into his first loss to Frankie Randall.
The longest winning streak in years in the history of sports is owned by the New York Yacht Club who held the America's Cup from 1857 (when the syndicate that won the Cup donated the trophy to the club) until 1983 when the Cup was won by the challenger, Australia II of Australia.
The longest individual streak in terms of consecutive wins in any sports is held by Jahangir Khan who won 555 squash matches between 1981 and 1986.
Edwin Moses nine years nine months nine days, he held the hurdle record of the world.
The longest winning streak in sports history is held by the New York Yachting Club which held the Americas Cup trophy for 136 years from 1851 to 1987.
Between 1988 and 1989 the Vancouver 86ers in the Canadian Soccer League went 46 games without a loss.
94 games by the Tignish Aces.
1st longest; 'bout 26 2nd longest; 'bout 24
the 2009 nets went 0-18 till finally winning one
That would be his current losing streak of 104 races.
New Jersey Nets with an 0-18 losing streak