2014 MLB Relative Power Index (RPI), as of the games of July 9,2014

MLB RPI Rankings
RK	TEAM	RPI	W	L	PCT	SOS	PWR	RS	RA	EXPW-L	EXPWP
1	Oakland Athletics	.536	57	34	.626	.506	1	452	310	62-29	.680
2	Los Angeles Angels	.526	53	37	.589	.505	0	445	374	53-37	.586
3	Detroit Tigers	.520	50	37	.575	.501	0	412	376	47-40	.546
4	St. Louis Cardinals	.515	50	42	.543	.506	0	340	318	49-43	.533
5	Milwaukee Brewers	.511	52	40	.565	.494	0	403	378	49-43	.532
6	Cincinnati Reds	.511	49	42	.538	.501	0	356	329	49-42	.539
7	Toronto Blue Jays	.510	48	45	.516	.508	0	420	394	49-44	.532
8	Washington Nationals	.509	49	40	.551	.496	0	367	310	52-37	.584
9	Kansas City Royals	.509	47	43	.522	.504	0	372	354	47-43	.525
10	Seattle Mariners	.509	49	42	.538	.499	0	366	309	53-38	.584
11	Baltimore Orioles	.507	49	41	.544	.495	10	395	370	48-42	.533
12	San Francisco Giants	.506	50	41	.549	.492	0	357	336	48-43	.530
13	Atlanta Braves	.505	49	42	.538	.494	0	334	331	46-45	.505
14	Pittsburgh Pirates	.505	47	44	.516	.501	0	368	375	45-46	.491
15	New York Yankees	.505	46	44	.511	.502	0	366	397	41-49	.459
16	Los Angeles Dodgers	.504	51	42	.548	.489	0	397	347	53-40	.567
17	Cleveland Indians	.502	44	46	.489	.506	0	396	410	43-47	.483
18	Chicago White Sox	.494	44	48	.478	.500	0	396	418	44-48	.473
19	Minnesota Twins	.494	41	49	.456	.506	0	374	402	42-48	.464
20	New York Mets	.490	42	49	.462	.500	0	361	355	46-45	.508
21	Tampa Bay Rays	.490	42	52	.447	.505	0	359	392	43-51	.456
22	Houston Astros	.489	39	54	.419	.513	0	362	435	38-55	.409
23	Boston Red Sox	.488	40	51	.440	.505	0	342	396	39-52	.427
24	Miami Marlins	.488	44	47	.484	.490	0	390	394	45-46	.495
25	Texas Rangers	.483	38	53	.418	.505	0	376	466	36-55	.394
26	Philadelphia Phillies	.482	40	51	.440	.496	0	346	396	39-52	.433
27	Chicago Cubs	.481	38	52	.422	.500	0	342	367	42-48	.465
28	San Diego Padres	.480	40	51	.440	.494	0	272	322	38-53	.416
29	Colorado Rockies	.477	39	53	.424	.495	0	441	482	42-50	.456
30	Arizona Diamondbacks	.475	39	54	.419	.493	0	370	434	39-54	.421

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.