Mo is the all time leader in World Series saves with 9 and postseason saves with 34. He is 5th all time in postseason ERA (despite pitching triple the innings of anyone in the top 9), tied for 10th in World Series ERA, 1st in postseason appearances and 2nd in World Series appearances, among other things.

Postseason Pitching
Glossary

Year Round Opp   W/L  G GS  ERA W-L SV    IP  H ER BB SO
--------------------+--+--+----+---+--+-----+--+--+--+--
1995 ALDS SEA L 3 0 0.00 1-0 0 5.3 3 0 1 8
1996 ALDS TEX W 2 0 0.00 0-0 0 4.7 0 0 1 1
ALCS BAL W 2 0 0.00 1-0 0 4.0 6 0 1 5
WS ATL W 4 0 1.59 0-0 0 5.7 4 1 3 4
1997 ALDS CLE L 2 0 4.50 0-0 1 2.0 2 1 0 1
1998 ALDS TEX W 3 0 0.00 0-0 2 3.3 1 0 1 2
ALCS CLE W 4 0 0.00 0-0 1 5.7 0 0 1 5
WS SDP W 3 0 0.00 0-0 3 4.3 5 0 0 4
1999 ALDS TEX W 2 0 0.00 0-0 2 3.0 1 0 0 3
ALCS BOS W 3 0 0.00 1-0 2 4.7 5 0 0 3
WS ATL W 3 0 0.00 1-0 2 4.7 3 0 1 3
2000 ALDS OAK W 3 0 0.00 0-0 3 5.0 2 0 0 2
ALCS SEA W 3 0 1.93 0-0 1 4.7 4 1 0 1
WS NYM W 4 0 3.00 0-0 2 6.0 4 2 1 7
2001 ALDS OAK W 3 0 0.00 0-0 2 5.0 4 0 0 4
ALCS SEA W 4 0 1.93 1-0 2 4.7 2 1 1 3
WS ARI L 4 0 1.42 1-1 1 6.3 6 1 1 7
2002 ALDS ANA L 1 0 0.00 0-0 1 1.0 1 0 0 0
2003 ALDS MIN W 2 0 0.00 0-0 2 4.0 0 0 0 4
ALCS BOS W 4 0 1.12 1-0 2 8.0 5 1 0 6
WS FLA L 2 0 0.00 0-0 1 4.0 2 0 0 4
2004 ALDS MIN W 4 0 0.00 1-0 0 5.7 2 0 0 2
ALCS BOS L 5 0 1.29 0-0 2 7.0 6 1 2 6
2005 ALDS LAA L 2 0 3.00 0-0 2 3.0 1 1 1 2
2006 ALDS DET L 1 0 0.00 0-0 0 1.0 1 0 0 0
2007 ALDS CLE L 3 0 0.00 0-0 0 4.7 2 0 1 6
--------------------+--+--+----+---+--+-----+--+--+--+--
13 Lg Div Ser 7-6 31 0 0.38 2-0 15 47.7 20 2 5 35
7 Lg Champ Ser 6-1 25 0 0.93 4-0 10 38.7 28 4 5 29
6 World Ser 4-2 20 0 1.16 2-1 9 31.0 24 4 6 29
26 Postsea Ser 17-9 76 0 0.77 8-1 34 117.3 72 10 16 93
--------------------+--+--+----+---+--+-----+--+--+--+--
Appearances on Leaderboards and Awards
Glossary

Awards
1999
MLB - WS MVP
2003
ALCS - MVP


Special thanks to Baseball-Reference.com for the data.