2014 MLB Relative Power Index (RPI),as of the games of July 28,2014

MLB RPI Rankings
RK	TEAM	RPI	W	L	PCT	SOS	PWR	RS	RA	EXPW-L	EXPWP
1	Oakland Athletics	.532	65	40	.619	.503	1	527	361	71-34	.681
2	Los Angeles Angels	.530	63	41	.606	.504	2	508	417	62-42	.597
3	Baltimore Orioles	.518	58	46	.558	.505	7	441	412	56-48	.534
4	Detroit Tigers	.517	57	45	.559	.503	3	476	433	56-46	.547
5	Toronto Blue Jays	.514	57	50	.533	.508	13	496	460	58-49	.538
6	St. Louis Cardinals	.513	56	48	.538	.504	10	385	374	54-50	.514
7	Washington Nationals	.509	57	46	.553	.495	4	434	360	61-42	.592
8	Milwaukee Brewers	.508	59	48	.551	.494	5	465	437	57-50	.531
9	New York Yankees	.507	54	51	.514	.505	12	415	445	49-56	.465
10	Seattle Mariners	.507	54	51	.514	.504	15	403	352	60-45	.567
11	Kansas City Royals	.507	53	51	.510	.506	16	416	417	52-52	.499
12	Pittsburgh Pirates	.506	56	49	.533	.497	11	437	434	53-52	.503
13	Los Angeles Dodgers	.506	59	47	.557	.489	6	442	388	60-46	.565
14	Atlanta Braves	.505	58	48	.547	.490	9	408	382	56-50	.533
15	Cleveland Indians	.503	52	53	.495	.506	18	470	464	53-52	.506
16	Tampa Bay Rays	.502	52	54	.491	.506	14	416	419	53-53	.496
17	San Francisco Giants	.502	57	49	.538	.490	8	411	390	56-50	.526
18	Cincinnati Reds	.500	52	53	.495	.502	17	394	387	53-52	.509
19	New York Mets	.496	51	55	.481	.501	21	412	401	54-52	.514
20	Miami Marlins	.493	52	53	.495	.492	19	436	456	50-55	.478
21	Chicago White Sox	.492	51	55	.481	.496	20	454	471	51-55	.482
22	Boston Red Sox	.492	48	58	.453	.505	22	409	457	47-59	.445
23	Minnesota Twins	.489	47	57	.452	.502	24	428	470	47-57	.453
24	Houston Astros	.487	43	63	.406	.514	29	407	510	41-65	.389
25	Philadelphia Phillies	.482	46	60	.434	.498	25	408	473	45-61	.427
26	Texas Rangers	.481	42	64	.396	.509	30	423	540	40-66	.380
27	San Diego Padres	.478	46	59	.438	.492	23	323	364	46-59	.441
28	Arizona Diamondbacks	.477	46	60	.434	.491	26	425	495	45-61	.424
29	Chicago Cubs	.475	43	61	.413	.495	27	401	448	46-58	.445
30	Colorado Rockies	.474	43	62	.410	.495	28	496	549	47-58	.449

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.