What is the record for most consecutive wins in major league baseball?

Answer 1

I am not sure if you meant consecutive wins by a pitcher or a team. However, the pitching records are:
+ Most Consecutive Games Won Ever:
Carl Hubbell - 24 from July 17, 1936 - May 27, 1937.
+ Most Conscecutive Games Won in a Season:
Tim Keefe - 19 from June 23, 1888 - August 10, 1888.
Rube Marquard - 19 from April 11, 1912 - July 3, 1912.
+ Most Consecutive Games Won in a Season by a Relief Pitcher:
Roy Face - 17 from April 22 - August 30, 1959.
+ Most Consecutive Games Won in a Season by a Rookie:
Pat Luby - 17 from August 6, 1890 - October 3, 1890.

The team record for most consecutive wins is the 1916 New York Giants with 26 in a row (all at home too). The only team to win 20 in a row in the modern era (only one since 1935) was my Oakland A's in 2002 at 20 (10 at home).

Answer 2

To be fair, that 1916 streak by the Giants was 26-0-1. Won 12 games, played a tie against the Pirates, won another 14.

Impressively, the entire streak was at home. Don't see that sort of scheduling any more.

Answer 3

Best start after 40 games was 1984 Detroit Tigers. 35-5.

But they only won 17 consecutive.