If the Cardinals and Diamondbacks remain atop their respective divisions, solid pitching likely will be a major reason. Each sends a highly regarded young hurler to the mound Tuesday night, with Michael Wacha looking to guide St. Louis to an eighth victory in 10 tries in a matchup with Tyler Skaggs and visiting Arizona.
The Cardinals (38-19) have the best record in the major leagues and haven't lost back-to-back games since a three-game skid April 27-29. Carlos Beltran went 3 for 5 with a two-run homer and Yadier Molina, after appealing a one-game suspension handed down just before the contest, hit a solo homer in the fifth inning of a 7-1 win over the Diamondbacks on Monday.
Matt Carpenter had three hits and is batting .412 during a career high-tying 12-game hitting streak.
The defeat was the first in three contests for Arizona (32-25). Gerardo Parra, 10 for 20 in four games against St. Louis this season, had two hits and is batting .407 during a seven-game hitting streak.