Highest Single-Season Pitcher PIV: Leaders & Records

Single Season

Includes the 2026 season through October 9, 2026

This board follows the record MLB adopted in 2024, when the statistics of the seven recognised Negro Leagues (1920–1948) became part of the official record. Because a Negro Leagues season ran roughly 69 games to the American and National Leagues’ 149, the career qualification is prorated from 3,000 at-bats to 1,389 for careers played mainly in those leagues, and from 400 plate appearances to 185 for a single Negro Leagues season. The all-time AL & NL board uses the traditional 3,000-at-bat rule and excludes Negro Leagues records.

As of October 9, 2026, the single-season leader in Pitcher PIV is Pedro Martinez (1999) with 18,448.04. Randy Johnson (2001) is second with 15,025.20 and Roger Clemens (1997) is third with 14,891.87. This page ranks the top 100 seasons in Pitcher PIV.

Pitcher PIV (Pitcher Player Impact Value):
The pitching counterpart to PIV: run prevention relative to the league average of the pitcher's own era, adjusted for workload.

Data updated

Pedro Martinez holds the single-season Pitcher PIV record with 18,448.04 Pitcher PIV in 1999, ahead of Randy Johnson (15,025.20 in 2001) and Roger Clemens (14,891.87 in 1997).

Rankings cover the top 100 qualifying seasons (1901 onward).

Top 10 Pitcher PIV

Single Season. Click a bar to view the player.

Highest Single-Season Pitcher PIV: Leaders & Records (AL/NL + Negro Leagues Combined)
Rank Player Year Team Pitcher PIV
1 Pedro Martinez 1999 BOS 18,448.04
2 Randy Johnson 2001 ARI 15,025.20
3 Roger Clemens 1997 TOR 14,891.87
4 Kevin Brown 1998 SDN 14,876.43
5 Pedro Martinez 2000 BOS 14,726.38
6 Randy Johnson 2000 ARI 14,602.40
7 Sandy Koufax 1965 LAN 14,098.26
8 Randy Johnson 2004 ARI 13,964.87
9 Randy Johnson 1999 ARI 13,957.33
10 J. R. Richard 1979 HOU 13,920.33
11 Walter Johnson 1910 WS1 13,805.85
12 Sandy Koufax 1963 LAN 13,293.41
13 Randy Johnson 1995 SEA 13,256.93
14 Walter Johnson 1912 WS1 13,228.97
15 Mike Scott 1986 HOU 13,203.08
16 John Smoltz 1996 ATL 13,129.16
17 Dwight Gooden 1985 NYN 12,908.56
18 Curt Schilling 2002 ARI 12,858.44
19 Pedro Martinez 1997 MON 12,673.71
20 Sandy Koufax 1966 LAN 12,477.92
21 Bob Gibson 1970 SLN 12,454.31
22 Lefty Grove 1930 PHA 12,385.48
23 Bob Feller 1946 CLE 12,370.66
24 Bert Blyleven 1973 MIN 12,365.41
25 Ed Walsh 1908 CHA 12,269.92
26 Jacob deGrom 2018 NYN 12,260.15
27 Dwight Gooden 1984 NYN 12,102.77
28 Greg Maddux 1996 ATL 12,096.56
29 Clayton Kershaw 2015 LAN 12,014.49
30 Greg Maddux 1995 ATL 11,985.41
31 Greg Maddux 1997 ATL 11,968.56
32 Zack Greinke 2009 KCA 11,960.41
33 Curt Schilling 1997 PHI 11,828.44
34 Curt Schilling 1998 PHI 11,799.36
35 Ed Walsh 1911 CHA 11,748.62
36 Tim Lincecum 2009 SFN 11,665.91
37 Tom Seaver 1971 NYN 11,657.75
38 Steve Carlton 1972 PHI 11,638.53
39 Christy Mathewson 1908 NY1 11,564.62
40 Steve Carlton 1980 PHI 11,480.67
41 Corbin Burnes 2021 MIL 11,376.68
42 Steve Carlton 1982 PHI 11,375.85
43 Ed Walsh 1910 CHA 11,352.85
44 Ben Sheets 2004 MIL 11,286.04
45 Rube Waddell 1904 PHA 11,191.33
46 Greg Maddux 1994 ATL 11,141.77
47 Hal Newhouser 1946 DET 11,085.16
48 Randy Johnson 2002 ARI 11,065.94
49 Bob Gibson 1969 SLN 11,011.63
50 Roger Clemens 1998 TOR 10,936.37
51 Pete Alexander 1915 PHI 10,932.96
52 Nolan Ryan 1973 CAL 10,932.05
53 Dazzy Vance 1924 BRO 10,853.42
54 Roger Clemens 1988 BOS 10,850.72
55 Ron Guidry 1978 NYA 10,817.00
56 Rube Waddell 1903 PHA 10,789.38
57 Greg Maddux 1998 ATL 10,711.43
58 Roy Halladay 2011 PHI 10,671.55
59 Chris Sale 2017 BOS 10,657.07
60 Walter Johnson 1913 WS1 10,622.20
61 Mark Prior 2003 CHN 10,621.22
62 Pedro Martinez 2003 BOS 10,602.04
63 Pedro Martinez 2002 BOS 10,574.70
64 Vida Blue 1971 OAK 10,548.41
65 Kevin Brown 1996 FLO 10,541.48
66 Van Mungo 1936 BRO 10,463.11
67 Tom Seaver 1970 NYN 10,454.92
68 Kevin Brown 1999 LAN 10,369.24
69 Gerrit Cole 2019 HOU 10,335.53
70 Roger Clemens 1987 BOS 10,306.17
71 Smoky Joe Wood 1912 BOS 10,225.73
72 Sam McDowell 1965 CLE 10,218.01
73 Tim Lincecum 2008 SFN 10,140.90
74 Greg Maddux 2000 ATL 10,112.36
75 Tom Seaver 1975 NYN 10,100.42
76 Nolan Ryan 1987 HOU 10,072.64
77 Roger Clemens 1990 BOS 10,062.33
78 Carl Hubbell 1933 NY1 10,019.30
79 Sam McDowell 1969 CLE 9,970.05
80 Clayton Kershaw 2014 LAN 9,956.99
81 Bob Feller 1940 CLE 9,933.38
82 Harry Brecheen 1948 SLN 9,907.92
83 Corey Kluber 2017 CLE 9,858.35
84 Mario Soto 1982 CIN 9,776.67
85 Bob Gibson 1968 SLN 9,773.18
86 Bob Veale 1965 PIT 9,759.21
87 Jacob deGrom 2019 NYN 9,725.72
88 Cy Young 1905 BOS 9,724.97
89 Cy Blanton 1935 PIT 9,712.17
90 Juan Marichal 1969 SFN 9,711.71
91 Jake Arrieta 2015 CHN 9,675.07
92 Kevin Brown 2000 LAN 9,612.82
93 Dennis Leonard 1977 KCA 9,592.30
94 Roger Clemens 1991 BOS 9,592.03
95 Justin Verlander 2009 DET 9,573.55
96 Dazzy Vance 1925 BRO 9,569.62
97 Don Drysdale 1964 LAN 9,554.79
98 Jake Peavy 2007 SDN 9,530.70
99 Jason Schmidt 2003 SFN 9,518.24
100 Robin Roberts 1953 PHI 9,487.25

Reading the single-season Pitcher PIV board (combined view)

To make this list, a season needs at least 9,487.25, the mark at rank 100. By decade, the 1990s and 2000s are the best represented, while the list as a whole spans the 1900s through the 2020s. The top ten leans toward the 1990s. The board repeats several players, among them Pedro Martinez (1999, 2000, 1997, 2003, and 2002), Randy Johnson (2001, 2000, 2004, 1999, and 1995), and Roger Clemens (1997, 1998, 1988, 1987, and 1990). BOS is the most common entry in the Team column. Pedro Martinez leads at 18,448.04 in 1999. Second place belongs to Randy Johnson, at 15,025.20 (2001). No Negro Leagues entry reaches this board even with the prorated qualification.

Frequently Asked Questions

Who has the highest single-season Pitcher PIV (1901 onward)?
Pedro Martinez — 18,448.04 Pitcher PIV in 1999, among qualifying seasons (1901 onward). Next are Randy Johnson (15,025.20 in 2001) and Roger Clemens (14,891.87 in 1997).
What was Pedro Martinez's Pitcher PIV in 1999?
Pedro Martinez accumulated 18,448.04 Pitcher PIV for BOS in 1999 — the highest mark on this leaderboard.
Who else ranks in the top 5 for single-season Pitcher PIV?
1. Pedro Martinez (18,448.04 in 1999); 2. Randy Johnson (15,025.20 in 2001); 3. Roger Clemens (14,891.87 in 1997); 4. Kevin Brown (14,876.43 in 1998); 5. Pedro Martinez (14,726.38 in 2000).
Who qualifies for this Pitcher PIV leaderboard?
This leaderboard ranks qualifying seasons (1901 onward), showing the top 100. Pedro Martinez leads with 18,448.04 Pitcher PIV in 1999.