Longest MLB Postseason Title Streaks

Allie Reynolds led the MLB Postseason in strikeouts for 4 consecutive seasons, 1949 to 1952, the longest run in MLB Postseason history.

A title is a season finished first in a category, not an award, and a run ends the moment somebody else finishes first — a missed season through injury breaks it just as a rival's year does. Baseball ranks fielding by position, so several of the longest runs here are defensive.

#	Player	Category	Years	Span
1	Allie Reynolds	Strikeouts	4	1949–1952
2	Mariano Rivera	Saves	4	1998–2001
3	Mordecai Brown	Shutouts	3	1906–1908
4	Christy Mathewson	Innings Pitched	3	1911–1913
5	Art Nehf	Complete Games	3	1921–1923
6	Willie Foster	Strikeouts	3	1926–1928
7	Willie Foster	Wins	3	1926–1928
8	Willie Foster	Innings Pitched	3	1926–1928
9	Willie Foster	Complete Games	3	1926–1928
10	George Earnshaw	Strikeouts	3	1929–1931
11	George Earnshaw	Complete Games	3	1929–1931
12	Johnny Murphy	Saves	3	1936–1938
13	Gene Woodling	Runs	3	1949–1951
14	Joe DiMaggio	Home Runs	3	1949–1951
15	Rollie Fingers	Saves	3	1972–1974
16	George Brett	Triples	3	1976–1978
17	Keith Lockhart	Triples	3	1997–1999
18	Mariano Rivera	Earned Run Average	3	1998–2000