2014 MLB Relative Power Index (RPI),as of the games of September 25,2014

MLB RPI Rankings
RK	TEAM	RPI	W	L	PCT	SOS	PWR	RS	RA	EXPW-L	EXPWP
1	Los Angeles Angels	.530	98	61	.616	.502	1	768	620	96-63	.605
2	Baltimore Orioles	.528	95	64	.597	.505	3	700	585	94-65	.589
3	Washington Nationals	.518	93	65	.589	.495	2	669	539	96-62	.606
4	Detroit Tigers	.517	89	70	.560	.503	6	747	682	87-72	.545
5	St. Louis Cardinals	.514	88	71	.553	.501	5	609	592	82-77	.514
6	Oakland Athletics	.513	86	73	.541	.504	9	715	565	98-61	.616
7	Kansas City Royals	.512	87	72	.547	.501	10	638	614	83-76	.519
8	Los Angeles Dodgers	.512	91	68	.572	.493	4	695	603	91-68	.571
9	Pittsburgh Pirates	.510	87	72	.547	.498	8	672	616	86-73	.543
10	Seattle Mariners	.509	84	75	.528	.502	11	624	549	90-69	.564
11	New York Yankees	.508	82	77	.516	.505	14	617	647	76-83	.476
12	Cleveland Indians	.506	83	76	.522	.501	12	661	649	81-78	.509
13	Toronto Blue Jays	.506	81	78	.509	.504	15	715	681	83-76	.524
14	San Francisco Giants	.502	86	73	.541	.489	7	652	606	85-74	.537
15	Milwaukee Brewers	.500	81	78	.509	.496	13	642	645	79-80	.498
16	Tampa Bay Rays	.500	76	83	.478	.507	16	608	617	78-81	.493
17	New York Mets	.495	77	82	.484	.499	18	618	611	80-79	.506
18	Atlanta Braves	.495	77	82	.484	.498	17	563	589	76-83	.477
19	Cincinnati Reds	.492	74	85	.465	.501	22	580	602	77-82	.481
20	Boston Red Sox	.491	70	89	.440	.508	24	617	699	70-89	.438
21	Chicago White Sox	.490	72	87	.453	.503	21	650	745	69-90	.432
22	Miami Marlins	.490	76	82	.481	.493	19	629	657	76-82	.478
23	Houston Astros	.489	69	90	.434	.508	26	622	712	69-90	.433
24	Philadelphia Phillies	.488	72	87	.453	.500	23	611	677	71-88	.449
25	San Diego Padres	.486	76	83	.478	.489	20	527	564	74-85	.466
26	Minnesota Twins	.486	68	91	.428	.506	27	692	767	71-88	.449
27	Chicago Cubs	.486	71	88	.447	.499	25	602	699	68-91	.426
28	Texas Rangers	.484	66	93	.415	.507	29	630	759	65-94	.408
29	Colorado Rockies	.473	66	93	.415	.492	28	741	795	74-85	.465
30	Arizona Diamondbacks	.468	63	96	.396	.492	30	604	732	64-95	.405

Glossary

• W: Wins
• L: Losses
• PCT: Winning percentage
• RPI: Relative Power Index+
• SOS: Strength of schedule

• PWR: ESPN Power Ranking
• RS: Runs scored
• RA: Runs allowed
• EXW-L: Expected W-L*
• EXWP: Expected winning percentage*

+The basic formula is 25% team winning percentage, 50% opponents' average winning percentage, and 25% opponents' opponents' average winning percentage.
*ExW-L and ExWP are derived from Bill James' Pythagorean theorem of baseball: Runs scored [squared] / (Runs scored [squared] + runs allowed [squared]). This formula was designed to relate a team's runs scored and runs allowed to its won-lost record.