18 games
9 as of 8/5/12
Their longest home winning streak was 14 games
Cleveland cavaliers 26
Cleveland browns
The longest winning streak in Indians history was 13 games, and this was accomplished twice (August 1-15, 1951 and April 18-May 2, 1942.)
23
Cleveland Indians. 455 consecutive games from 1995 through 2001.
The longest losing streak is 23 games in a row by 95-96 Grizzlies and 97-98 Nuggets.
That would be his current losing streak of 104 races.
Michael Waltrip had the longest losing streak before winning at the Daytona 500 in 2001.
I believe there longest winning streak was 13 wins