2016 MLB Relative Power Index (RPI),as of the games of May 1,2016

MLB RPI Rankings
RK	TEAM	RPI	W	L	PCT	SOS	PWR	RS	RA	EXPW-L	EXPWP
1	Philadelphia Phillies	.565	15	10	.600	.553	0	82	98	10-15	.412
2	Chicago White Sox	.556	18	8	.692	.511	0	102	77	17-9	.637
3	Chicago Cubs	.552	17	6	.739	.490	0	139	61	19-4	.839
4	New York Mets	.551	15	8	.652	.518	0	108	72	16-7	.692
5	Washington Nationals	.545	17	7	.708	.490	0	99	61	17-7	.725
6	Baltimore Orioles	.536	14	10	.583	.521	0	109	93	14-10	.579
7	Cincinnati Reds	.529	10	15	.400	.572	0	93	145	7-18	.291
8	Texas Rangers	.523	14	11	.560	.511	0	112	99	14-11	.561
9	Los Angeles Angels	.523	12	13	.480	.537	0	89	99	11-14	.447
10	Miami Marlins	.519	12	12	.500	.525	0	97	108	11-13	.446
11	Cleveland Indians	.509	10	12	.455	.527	0	92	87	12-10	.528
12	Pittsburgh Pirates	.504	15	10	.600	.472	0	133	115	14-11	.572
13	Colorado Rockies	.503	12	12	.500	.504	0	132	138	11-13	.478
14	Oakland Athletics	.502	13	13	.500	.503	0	91	100	12-14	.453
15	Kansas City Royals	.502	13	11	.542	.489	0	81	82	12-12	.494
16	Toronto Blue Jays	.502	12	14	.462	.516	0	105	103	13-13	.510
17	Detroit Tigers	.501	14	10	.583	.473	0	115	98	14-10	.579
18	Seattle Mariners	.500	13	11	.542	.487	0	101	80	15-9	.614
19	Tampa Bay Rays	.495	11	13	.458	.507	0	77	85	11-13	.451
20	Boston Red Sox	.488	15	10	.600	.451	0	134	112	15-10	.589
21	Arizona Diamondbacks	.486	12	15	.444	.500	0	123	144	11-16	.422
22	St. Louis Cardinals	.485	12	13	.480	.486	0	143	109	16-9	.633
23	San Francisco Giants	.484	13	13	.500	.478	0	130	122	14-12	.532
24	Atlanta Braves	.463	6	18	.250	.535	0	79	125	7-17	.285
25	Los Angeles Dodgers	.460	13	13	.500	.447	0	106	97	14-12	.544
26	San Diego Padres	.458	9	16	.360	.491	0	95	124	9-16	.370
27	Minnesota Twins	.454	7	18	.280	.512	0	85	116	9-16	.349
28	Milwaukee Brewers	.451	9	15	.375	.476	0	103	142	8-16	.345
29	New York Yankees	.448	8	15	.348	.482	0	81	112	8-15	.343
30	Houston Astros	.439	8	17	.320	.479	0	92	124	9-16	.355

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.