2016 MLB Relative Power Index (RPI),as of the games of September 29,2016 from ESPN.GO.COM

MLB RPI Rankings

RK	TEAM	RPI	W	L	PCT	SOS	PWR	RS	RA	EXPW-L	EXPWP
1	Chicago Cubs	.531	101	57	.639	.495	0	790	542	107-51	.680
2	Texas Rangers	.526	94	65	.591	.504	0	757	746	81-78	.507
3	Boston Red Sox	.523	92	67	.579	.505	0	869	685	98-61	.617
4	Cleveland Indians	.518	91	67	.576	.499	0	761	669	89-69	.564
5	Baltimore Orioles	.518	87	72	.547	.508	0	728	705	82-77	.516
6	Washington Nationals	.517	93	66	.585	.494	0	747	597	97-62	.610
7	Toronto Blue Jays	.516	87	72	.547	.505	0	750	657	90-69	.566
8	Seattle Mariners	.512	85	74	.535	.505	0	753	694	86-73	.541
9	New York Yankees	.511	83	76	.522	.507	0	670	686	78-81	.488
10	Houston Astros	.510	83	76	.522	.505	0	719	686	83-76	.523
11	Los Angeles Dodgers	.509	91	68	.572	.488	0	721	619	92-67	.576
12	Detroit Tigers	.509	85	73	.538	.500	0	741	713	82-76	.519
13	Kansas City Royals	.505	81	78	.509	.504	0	668	696	76-83	.479
14	St. Louis Cardinals	.504	83	76	.522	.498	0	758	705	85-74	.536
15	New York Mets	.504	85	74	.535	.493	0	659	608	86-73	.540
16	San Francisco Giants	.500	84	75	.528	.491	0	696	627	88-71	.552
17	Chicago White Sox	.499	77	82	.484	.504	0	676	700	77-82	.483
18	Pittsburgh Pirates	.496	78	80	.494	.497	0	722	737	77-81	.490
19	Los Angeles Angels	.495	72	87	.453	.510	0	702	722	77-82	.486
20	Miami Marlins	.492	78	80	.494	.491	0	640	666	76-82	.480
21	Colorado Rockies	.487	74	85	.465	.494	0	834	849	78-81	.491
22	Tampa Bay Rays	.487	66	93	.415	.511	0	661	705	74-85	.468
23	Oakland Athletics	.486	67	92	.421	.507	0	640	746	67-92	.424
24	Milwaukee Brewers	.483	71	88	.447	.495	0	660	722	72-87	.455
25	Cincinnati Reds	.481	67	92	.421	.501	0	702	836	66-93	.414
26	Philadelphia Phillies	.480	70	89	.440	.494	0	601	784	59-100	.370
27	San Diego Padres	.480	68	91	.428	.497	0	676	753	71-88	.446
28	Atlanta Braves	.477	66	92	.418	.497	0	641	770	65-93	.409
29	Arizona Diamondbacks	.476	66	93	.415	.496	0	735	880	65-94	.411
30	Minnesota Twins	.468	57	102	.358	.504	0	707	879	62-97	.393

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.