2017 MLB Relative Power Index (RPI),as of the games of April 14,2017

MLB RPI Rankings

RK	TEAM	RPI	W	L	PCT	SOS	PWR	RS	RA	EXPW-L	EXPWP
1	Detroit Tigers	.651	7	3	.700	.635	0	44	49	4-6	.446
2	New York Yankees	.627	6	4	.600	.635	0	48	35	7-3	.653
3	Minnesota Twins	.611	6	4	.600	.614	0	46	27	7-3	.744
4	Chicago White Sox	.592	5	4	.556	.604	0	37	25	6-3	.687
5	Boston Red Sox	.582	5	5	.500	.609	0	44	46	5-5	.478
6	Baltimore Orioles	.562	7	2	.778	.490	0	41	37	5-4	.551
7	Colorado Rockies	.558	7	5	.583	.549	0	39	52	4-8	.360
8	Los Angeles Dodgers	.551	6	5	.545	.553	0	51	30	8-3	.743
9	Miami Marlins	.542	5	5	.500	.556	0	50	41	6-4	.598
10	San Francisco Giants	.539	5	7	.417	.580	0	56	51	7-5	.547
11	Arizona Diamondbacks	.537	7	4	.636	.504	0	56	49	6-5	.566
12	Chicago Cubs	.533	6	4	.600	.511	0	39	29	6-4	.644
13	Milwaukee Brewers	.512	6	5	.545	.501	0	50	43	6-5	.575
14	San Diego Padres	.498	5	6	.455	.512	0	37	50	4-7	.354
15	New York Mets	.497	7	4	.636	.451	0	55	44	7-4	.610
16	Cleveland Indians	.495	4	6	.400	.526	0	41	55	4-6	.357
17	Cincinnati Reds	.490	7	4	.636	.441	0	53	38	7-4	.660
18	St. Louis Cardinals	.478	3	7	.300	.537	0	37	52	3-7	.336
19	Kansas City Royals	.475	4	6	.400	.499	0	34	42	4-6	.396
20	Philadelphia Phillies	.468	3	7	.300	.524	0	48	51	5-5	.470
21	Washington Nationals	.465	6	4	.600	.420	0	52	54	5-5	.481
22	Tampa Bay Rays	.463	6	5	.545	.435	0	50	50	6-6	.500
23	Pittsburgh Pirates	.449	4	6	.400	.466	0	32	49	3-7	.299
24	Oakland Athletics	.445	5	6	.455	.442	0	40	47	5-6	.420
25	Los Angeles Angels	.432	6	5	.545	.394	0	48	57	5-6	.415
26	Houston Astros	.420	7	4	.636	.348	0	45	42	6-5	.534
27	Atlanta Braves	.414	3	6	.333	.441	0	32	44	3-6	.346
28	Texas Rangers	.414	4	6	.400	.418	0	55	47	6-4	.578
29	Seattle Mariners	.378	3	8	.273	.413	0	40	50	4-7	.390
30	Toronto Blue Jays	.375	1	9	.100	.467	0	28	42	3-7	.308

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.