Lowest OPS by a 1B in a Season Since 1920

The explanation of why I chose to look at seasons since 1920 can be found here. The short story is I wanted to avoid the low-power years of the deadball era while compiling lists of poor-hitting position players.

The qualifier for making the list is the player must have qualified for the league batting title during the season (rules throughout history are here) and he must have played at least 75% of his games during the season as a first baseman.

Here is the table of the twenty lowest seasons by OPS for a 1B since 1920:

Name	Year	Team	PA	AVG	OBP	SLG	OPS
Ivy Griffin	1920	PHA	508	.238	.281	.274	.555
Charlie Grimm	1920	PIT	581	.227	.273	.289	.562
Buddy Hassett	1940	BSN	485	.234	.273	.293	.566
Howie Schultz	1947	BRO/PHI	430	.223	.263	.319	.582
Johnny Sturm	1941	NYY	568	.239	.293	.300	.593
Joe Kuhel	1943	CHW	617	.213	.319	.284	.603
Johnny Walker	1921	PHA	443	.258	.278	.329	.607
Mike Squires	1981	CHW	334	.265	.312	.296	.608
Charlie Grimm	1933	CHC	413	.247	.290	.320	.610
Art Mahan	1940	PHI	591	.244	.297	.318	.615
Jim Bottomley	1935	CIN	423	.258	.294	.323	.617
Phil Todt	1927	BOS	571	.236	.280	.337	.617
Walter Holke	1921	BSN	621	.261	.284	.337	.621
Dick Siebert	1943	PHA	594	.251	.295	.328	.623
Dick Siebert	1942	PHA	642	.260	.291	.333	.624
Wes Parker	1968	LAD	534	.239	.312	.314	.626
Elbie Fletcher	1937	BSN	605	.247	.321	.308	.629
Earl Sheely	1931	BSN	586	.273	.319	.314	.633
George McQuinn	1946	PHA	556	.225	.317	.316	.633
Buck Etchison	1944	BSN	348	.214	.292	.344	.636

There have been ninety-eight seasons by first basemen since 1920 with an OPS under .700 and only one has occurred since 2000: Darin Erstad put up a .273/.325/.371 line, good for a .696 OPS, as a first baseman for the Angels in 2005.