Between the 1917 and 1921 seasons, the Philadelphia Athletics had the lowest wRC+ by a team, with 79 wRC+.

	TEAM	WRC+	G	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	PA	TB	XBH	SH	AVG	OBP	SLG	OPS	WRC	WRAA	WOBA	BRAA
1	Athletics	79	7,845	24,835	2,612	6,309	950	290	200	2,283	1,903	179	2,714	417	27,676	8,439	1,440	759	.254	.312	.340	.652	2680	-302.4	.313	-714
2	Phillies	84	7,737	24,615	2,700	6,372	1,058	242	257	2,394	1,681	129	2,548	486	27,124	8,685	1,557	699	.259	.310	.353	.662	2696	-223.5	.316	-486.5
3	Pirates	86	7,598	24,396	2,624	6,253	790	409	94	2,253	1,829	147	2,022	861	27,246	8,143	1,293	874	.256	.312	.334	.646	2591	-345.4	.310	-404.3
4	Robins	89	7,725	24,969	2,723	6,592	861	390	147	2,334	1,488	133	2,049	516	27,376	8,674	1,398	786	.264	.309	.347	.656	2665	-282.8	.313	-332.7
5	Cubs	92	7,941	24,479	2,831	6,453	981	301	130	2,427	1,842	173	2,096	621	27,481	8,426	1,412	987	.264	.320	.344	.664	2784	-174.6	.319	-243.6
6	Senators	92	7,829	24,915	2,964	6,615	980	360	110	2,550	2,184	230	2,450	717	28,188	8,645	1,450	859	.266	.330	.347	.677	3003	-30	.326	-268.2
7	Red Sox	92	7,639	23,969	2,909	6,255	1,002	307	101	2,514	2,295	179	1,980	504	27,540	8,174	1,410	1,097	.261	.330	.341	.671	2880	-86.1	.324	-282.6
8	Braves	95	7,787	24,712	2,669	6,414	795	382	143	2,290	1,894	170	2,464	565	27,629	8,402	1,320	853	.260	.317	.340	.657	2732	-243.8	.315	-159
9	Browns	95	7,970	24,587	3,104	6,825	1,046	365	168	2,672	2,033	176	2,063	582	27,751	9,105	1,579	955	.278	.337	.370	.707	3206	211	.338	-160.2
10	White Sox	97	7,603	24,513	3,252	6,764	1,011	386	123	2,784	2,244	189	2,025	691	27,937	8,916	1,520	991	.276	.341	.364	.705	3216	206	.338	-106.2
11	Yankees	98	7,705	24,559	3,384	6,609	1,077	304	341	2,971	2,356	157	2,576	482	27,961	9,317	1,722	889	.269	.337	.379	.716	3318	305.6	.342	-39.5
12	Tigers	99	7,925	24,688	3,272	6,828	1,065	388	149	2,838	2,430	141	2,045	578	28,248	9,116	1,602	989	.277	.345	.369	.714	3347	300.2	.342	-18.1
13	Cardinals	100	8,257	24,844	2,932	6,736	967	393	186	2,555	1,747	121	2,467	646	27,542	9,047	1,546	830	.271	.322	.364	.686	2968	-1.1	.327	17.1
14	Reds	102	7,585	24,381	2,966	6,627	886	437	99	2,555	1,778	190	1,823	699	27,230	8,684	1,422	881	.272	.326	.356	.682	2904	-25.5	.327	44.4
15	Indians	103	8,058	24,304	3,504	6,808	1,304	389	123	3,049	2,731	188	2,098	622	28,355	9,259	1,816	1,132	.280	.357	.381	.738	3599	540.1	.354	120.3
16	Giants	104	8,014	24,626	3,242	6,697	971	357	213	2,780	1,873	181	2,240	717	27,370	9,021	1,541	690	.272	.328	.366	.694	3032	81.5	.332	128