2017 MLB Relative Power Index (RPI),as of the games of April 7,2017 from ESPN.GO.COM

MLB RPI Rankings

RK	TEAM	RPI	W	L	PCT	SOS	PWR	RS	RA	EXPW-L	EXPWP
1	Minnesota Twins	.926	4	0	1.000	.901	0	24	6	4-0	.941
2	Colorado Rockies	.909	4	1	.800	.946	0	18	18	3-3	.500
3	Washington Nationals	.833	3	1	.750	.861	0	20	16	2-2	.610
4	Milwaukee Brewers	.760	2	3	.400	.880	0	19	17	3-2	.555
5	Miami Marlins	.745	2	2	.500	.826	0	17	15	2-2	.562
6	Chicago White Sox	.712	1	2	.333	.838	0	15	11	2-1	.650
7	Kansas City Royals	.695	1	3	.250	.844	0	10	22	1-3	.171
8	Cleveland Indians	.692	3	1	.750	.673	0	24	21	2-2	.566
9	Los Angeles Dodgers	.683	3	2	.600	.710	0	28	12	4-1	.845
10	Baltimore Orioles	.663	3	0	1.000	.551	0	12	8	2-1	.692
11	Boston Red Sox	.630	2	1	.667	.617	0	13	9	2-1	.676
12	Philadelphia Phillies	.589	1	3	.250	.701	0	14	19	1-3	.352
13	Detroit Tigers	.569	2	1	.667	.537	0	14	19	1-2	.352
14	Toronto Blue Jays	.535	1	3	.250	.630	0	16	18	2-2	.441
15	San Francisco Giants	.518	1	4	.200	.623	0	28	34	2-3	.404
16	Arizona Diamondbacks	.517	4	1	.800	.423	0	34	25	3-2	.649
17	Oakland Athletics	.516	2	3	.400	.555	0	20	25	2-3	.390
18	Cincinnati Reds	.411	3	1	.750	.299	0	14	8	3-1	.754
19	New York Yankees	.403	1	3	.250	.454	0	14	17	2-2	.404
20	San Diego Padres	.358	2	3	.400	.343	0	17	33	1-4	.210
21	Texas Rangers	.351	1	3	.250	.384	0	24	26	2-2	.460
22	Los Angeles Angels	.340	3	2	.600	.253	0	20	16	3-2	.610
23	Tampa Bay Rays	.327	3	2	.600	.236	0	23	22	3-2	.522
24	Pittsburgh Pirates	.278	1	2	.333	.259	0	8	12	1-2	.308
25	Chicago Cubs	.246	2	2	.500	.161	0	12	11	2-2	.543
26	New York Mets	.224	2	2	.500	.132	0	15	12	2-2	.610
27	Houston Astros	.217	3	2	.600	.089	0	13	13	3-3	.500
28	St. Louis Cardinals	.163	1	3	.250	.134	0	9	13	1-3	.324
29	Seattle Mariners	.103	1	4	.200	.070	0	9	17	1-4	.219
30	Atlanta Braves	.085	1	3	.250	.030	0	9	18	1-3	.200

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.