Updated MLB Relative Power Index (RPI) - 2014,as of the games of April 21,2014 from ESPN.GO.COM

MLB RPI Rankings
RK	TEAM	RPI	W	L	PCT	SOS	PWR	RS	RA	EXPW-L	EXPWP
1	Atlanta Braves	.625	13	6	.684	.605	3	76	51	13-6	.690
2	Milwaukee Brewers	.617	15	5	.750	.573	1	85	66	12-8	.624
3	Washington Nationals	.563	11	9	.550	.568	10	88	85	10-10	.517
4	New York Mets	.528	10	9	.526	.529	21	79	84	9-10	.469
5	Oakland Athletics	.526	13	6	.684	.473	5	90	59	13-6	.699
6	Boston Red Sox	.525	9	11	.450	.550	17	76	82	9-11	.462
7	Philadelphia Phillies	.522	9	10	.474	.538	24	82	96	8-11	.422
8	Minnesota Twins	.521	9	9	.500	.528	27	98	91	10-8	.537
9	St. Louis Cardinals	.519	11	9	.550	.509	2	74	65	11-9	.564
10	Detroit Tigers	.513	9	7	.563	.497	6	63	64	8-8	.492
11	Cleveland Indians	.507	9	10	.474	.518	22	81	87	9-10	.464
12	Chicago White Sox	.506	10	10	.500	.508	25	109	107	10-10	.509
13	Texas Rangers	.505	12	8	.600	.474	8	86	91	9-11	.472
14	San Diego Padres	.499	9	11	.450	.516	20	56	64	9-11	.434
15	Baltimore Orioles	.498	9	9	.500	.497	14	78	77	9-9	.506
16	Tampa Bay Rays	.497	9	10	.474	.505	12	75	74	10-9	.507
17	Toronto Blue Jays	.494	10	9	.526	.483	15	78	74	10-9	.526
18	New York Yankees	.493	11	8	.579	.465	9	75	84	8-11	.444
19	Pittsburgh Pirates	.492	9	11	.450	.506	13	86	84	10-10	.512
20	Miami Marlins	.484	9	11	.450	.496	26	96	85	11-9	.561
21	Seattle Mariners	.483	7	12	.368	.522	23	69	75	9-10	.458
22	Kansas City Royals	.482	9	9	.500	.476	11	63	69	8-10	.455
23	Los Angeles Dodgers	.476	12	8	.600	.434	4	81	73	11-9	.552
24	Colorado Rockies	.474	11	10	.524	.457	16	114	95	12-9	.590
25	Los Angeles Angels	.466	9	10	.474	.463	18	101	86	11-8	.580
26	San Francisco Giants	.466	11	9	.550	.438	7	80	77	10-10	.519
27	Cincinnati Reds	.456	8	11	.421	.468	19	79	68	11-8	.574
28	Houston Astros	.443	6	14	.300	.491	30	59	95	6-14	.278
29	Chicago Cubs	.415	6	12	.333	.443	29	63	77	7-11	.401
30	Arizona Diamondbacks	.398	5	17	.227	.455	28	79	134	6-16	.258

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.