Last week's ranking in parentheses
1. Rangers (4): They're 6-1 in starts by No. 5 and 6 starters Nick Tepesch and Justin Grimm. Move to the first spot because other teams ranked in the top 5 were 9-17 last week.
2. Tigers (6): Very impressive in sweeping the Braves, outscoring them 25-7. Anibal Sanchez's 17-strikeout game was the start of a great weekend.
3. Braves (1): Happy to be getting home after 3-7 trip to Pittsburgh, Denver and Detroit. Back to business against the Nationals.
4. Red Sox (10): It's time to start believing in these guys, who had a majors' best +40 run differential through Sunday. John Lackey's strong start Sunday hints that the rotation could be five deep, with Ryan Dempster and Felix Doubront continuing their strong work.
5. Cardinals (8): They have the Nationals' number, as they showed in sweeping low-scoring series behind strong starts from Shelby Miller, Adam Wainwright and Jaime Garcia.
6. Reds (5): Rookie Tony Cingrani worked 18 innings with a 1.50 ERA in his first three starts, including a win at Washington on Sunday. So much for the drop-off while Johnny Cueto recovers from a strained lat muscle.
7. Giants (2): Shortstop Brandon Crawford is continuing to emerge as one of baseball's true two-way players at his position. He's leading his team in homers with five.
8. Nationals (3): Rotation ranks fifth in NL in ERA. That's not bad but not as good as expected.
9. Orioles (11): Could Chris Davis wind up leading the league in home runs and RBIs this year? Probably not (his career OPS is .799) but he's positioned himself nicely for 35-plus homers and 100-plus RBIs, which would be a big step toward getting his team back in the playoffs.
10. Diamondbacks (12): Are they this year's Orioles? They're 6-0 in extra-inning games.
11. Yankees (14): Brian Cashman's late-spring roster restocking looked silly at the time. Not anymore, with the aging imports completely offsetting the run of injuries. Replacing right-hander Ivan Nova and catcher Francisco Cervelli is the latest challenge.
12. Athletics (7): They missed Yoenis Cespedes, who returned with a game-changing home run on Sunday.
13. Royals (13): Still not scoring runs like they did in the spring but averaged 5.6 runs last week, a big step forward.
14. Pirates (18): Very impressive in taking two of three in St. Louis. Rookie lefty Jeff Locke doesn't have great stuff but is looking fearless.
15. Rockies (9): Quiet stretch by Troy Tulowitzki and Carlos Gonzalez prompt call for third baseman Nolan Arenado, who was hitting .364 with a 1.059 OPS at Colorado Springs.
16. Rays (15): Matt Moore has been unbeatable.
17. Dodgers (16): Not a good sign that they've already needed nine starting pitchers, with Mike Magill the latest.
18. Phillies (17): Finally a win in a Cole Hamels start after five consecutive losses.
19. Brewers (19): Ron Roenicke did a nice job getting his team turned around after a 2-8 start. The rotation isn't great but could be good enough to compete.