F12 Top12 1990-1999

by Qualcomm98 on Apr 25, 2025 1:46 PM EDT

In the 1990s, there were some legendary pitching performances. The Factor12 Rating is able to quantify each successful season or failure. Where does your favorite pitcher rate against the competition?

There were 5142 pitching seasons in the decade of the ’90s. Of these occurrences, only 10 times did a pitcher record an F12 Rating over 33.000.

RANK		PITCHERS	AGE	IP	F12	F12%
1	1999	Pedro Martinez	27	213.33	36.360	12.360
2	1999	Randy Johnson	35	271.67	34.980	10.980
3	*1995	Greg Maddux	29	209.67	34.838	10.838
4	*1995	Randy Johnson	31	214.33	34.589	10.589
5	*1994	Greg Maddux	28	202.00	34.335	10.335
6	1997	Roger Clemens	34	264.00	34.247	10.247
7	1997	Pedro Martinez	25	241.33	34.111	10.111
8	1998	Kevin Brown	33	257.00	33.661	9.661
9	1996	John Smoltz	29	253.67	33.321	9.321
10	1997	Curt Schilling	30	254.33	33.130	9.130
11	1997	Greg Maddux	31	232.67	32.934	8.934
12	1998	Curt Schilling	31	268.67	32.453	8.453

*strike-shortened season

Pedro Martinez’ 1999 season (just .01 behind his 2000 season) is one of the greatest performances by any MLB pitcher in history. The right-hander finished number one on the F12 Top12 1990s list by 1.380 points over Randy Johnson.

Here is the entire F12 breakdown of 1990-99 seasons by MLB pitchers:

F12 RANGE	# Pitchers	%
30.000 – 36.000	45	0.009
24.000 – 29.999	1161	0.226
18.000 – 23.999	1271	0.247
12.000 – 17.999	670	0.130
06.000 – 11.999	691	0.134
00.000 – 05.999	1304	0.254