2014 MLB Relative Power Index (RPI),as of the games of June 6,2014 from ESPN.GO.COM

MLB RPI Rankings
RK	TEAM	RPI	W	L	PCT	SOS	PWR	RS	RA	EXPW-L	EXPWP
1	Oakland Athletics	.539	38	23	.623	.511	2	313	192	44-17	.727
2	San Francisco Giants	.535	40	21	.656	.495	1	265	203	38-23	.630
3	Toronto Blue Jays	.524	38	24	.613	.494	4	314	261	37-25	.591
4	Detroit Tigers	.522	32	25	.561	.509	3	254	245	30-27	.518
5	Atlanta Braves	.517	32	27	.542	.509	8	204	194	31-28	.525
6	Seattle Mariners	.515	31	29	.517	.515	18	247	226	33-27	.544
7	Los Angeles Angels	.511	32	28	.533	.504	5	286	256	33-27	.555
8	Milwaukee Brewers	.511	36	26	.581	.488	6	267	250	33-29	.533
9	Cleveland Indians	.508	30	31	.492	.513	24	267	282	29-32	.473
10	Texas Rangers	.506	31	30	.508	.505	15	260	285	28-33	.454
11	Minnesota Twins	.504	28	31	.475	.514	22	253	276	27-32	.457
12	Miami Marlins	.504	32	29	.525	.497	13	278	254	33-28	.545
13	Washington Nationals	.503	31	28	.525	.495	12	247	214	34-25	.571
14	Los Angeles Dodgers	.501	32	30	.516	.496	9	264	246	33-29	.535
15	Baltimore Orioles	.501	30	29	.508	.499	14	257	260	29-30	.494
16	New York Yankees	.499	31	29	.517	.493	10	244	270	27-33	.450
17	Houston Astros	.498	27	35	.435	.519	28	236	276	26-36	.422
18	Pittsburgh Pirates	.498	29	31	.483	.502	20	243	256	28-32	.474
19	St. Louis Cardinals	.498	31	31	.500	.497	7	233	227	32-30	.513
20	Kansas City Royals	.496	29	32	.475	.502	19	234	254	28-33	.459
21	Chicago White Sox	.495	31	31	.500	.493	16	277	292	29-33	.474
22	Boston Red Sox	.491	27	33	.450	.505	17	242	258	28-32	.468
23	Colorado Rockies	.486	28	32	.467	.492	11	300	292	31-29	.514
24	San Diego Padres	.485	27	34	.443	.499	25	191	232	25-36	.404
25	New York Mets	.480	28	33	.459	.487	23	244	246	30-31	.496
26	Cincinnati Reds	.478	27	32	.458	.485	21	203	223	27-32	.453
27	Philadelphia Phillies	.476	25	34	.424	.494	26	230	276	24-35	.410
28	Tampa Bay Rays	.475	24	38	.387	.505	27	232	275	26-36	.416
29	Chicago Cubs	.474	24	34	.414	.494	29	226	237	28-30	.476
30	Arizona Diamondbacks	.471	26	37	.413	.491	30	261	314	26-37	.409

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.