2014 MLB Relative Power Index (RPI),as of the games of August 29,2014 from ESPN.GO.COM

MLB RPI Rankings
RK	TEAM	RPI	W	L	PCT	SOS	PWR	RS	RA	EXPW-L	EXPWP
1	Los Angeles Angels	.529	81	53	.604	.504	2	628	519	80-54	.594
2	Oakland Athletics	.524	78	56	.582	.505	1	637	477	86-48	.641
3	Baltimore Orioles	.524	77	56	.579	.506	4	572	499	76-57	.568
4	Kansas City Royals	.514	74	60	.552	.502	6	550	527	70-64	.521
5	Washington Nationals	.514	76	57	.571	.494	3	571	465	80-53	.601
6	Detroit Tigers	.513	73	60	.549	.501	10	620	584	70-63	.530
7	Seattle Mariners	.511	72	61	.541	.501	8	531	435	80-53	.598
8	Los Angeles Dodgers	.511	76	59	.563	.493	5	554	500	74-61	.551
9	St. Louis Cardinals	.511	71	62	.534	.503	9	498	515	64-69	.483
10	Milwaukee Brewers	.508	73	61	.545	.495	7	574	547	70-64	.524
11	New York Yankees	.507	70	63	.526	.501	14	532	556	64-69	.478
12	Pittsburgh Pirates	.506	70	64	.522	.500	13	565	553	68-66	.511
13	Cleveland Indians	.505	69	64	.519	.500	17	573	550	69-64	.520
14	Atlanta Braves	.505	71	64	.526	.498	12	513	484	71-64	.529
15	Toronto Blue Jays	.504	67	67	.500	.505	15	592	597	66-68	.496
16	San Francisco Giants	.502	72	62	.537	.490	11	537	488	73-61	.548
17	Tampa Bay Rays	.500	65	70	.481	.507	18	527	516	69-66	.511
18	Cincinnati Reds	.494	65	70	.481	.499	19	510	501	69-66	.509
19	New York Mets	.493	63	72	.467	.502	20	512	521	66-69	.491
20	Miami Marlins	.493	65	68	.489	.494	16	540	570	63-70	.473
21	San Diego Padres	.489	63	70	.474	.494	21	439	457	64-69	.480
22	Boston Red Sox	.489	59	75	.440	.505	25	520	588	59-75	.439
23	Minnesota Twins	.489	59	75	.440	.505	22	584	628	62-72	.464
24	Philadelphia Phillies	.488	61	73	.455	.499	26	521	589	59-75	.439
25	Chicago White Sox	.487	60	74	.448	.501	23	560	640	58-76	.434
26	Houston Astros	.486	57	79	.419	.508	27	541	638	57-79	.418
27	Chicago Cubs	.483	60	74	.448	.495	24	510	555	61-73	.458
28	Texas Rangers	.477	53	81	.396	.505	30	540	669	53-81	.395
29	Arizona Diamondbacks	.475	56	78	.418	.495	28	522	622	55-79	.413
30	Colorado Rockies	.469	53	81	.396	.493	29	615	698	59-75	.437

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.