Rapid Reaction: Cubs 2, Cardinals 1

CHICAGO -- Here’s a quick look at the Chicago Cubs' 2-1 victory over the St. Louis Cardinals on Tuesday night at Wrigley Field.

How it happened: With two outs in the fourth inning Nate Schierholtz hit a two-run home run and it stood up as Travis Wood threw well again. So did the Cubs bullpen, pitching the final 2.1 innings without giving up any damage. The Cardinals got on the board with an Allen Craig solo shot in the second inning, but that’s all the offense they would get. Kevin Gregg earned his fifth save with a perfect ninth inning.

What it means: Wood just keeps on proving he belongs as a big league starter as he lowered his ERA to 2.33 while giving up just five hits. His pitch count of 114 in under 7 innings was his only failing, but part of that was due to his eight strikeouts, hardly a minus on his ledger. And this time the bullpen didn’t blow it for him as Carlos Marmol pitched 1.1 innings, giving up a couple of bloop hits and a walk but no runs as he picked off Yadier Molina to end an eighth-inning threat.

Molina’s gaffe: It may have cost the Cardinals the game -- we’ll never know -- as he took off for third base with two outs and the Cubs trying to preserve the 2-1 lead. Marmol calmly stepped off the mound and threw to Luis Valbuena to end the threat.

Outside the box: Reliever Kyuji Fujikawa's scheduled rehab appearance in Double-A Tennessee was postponed due to weather so he’ll pitch there on Wednesday and then join the Cubs in Washington for their weekend series against the Nationals. Fujikawa is recovering from a right forearm strain.

What’s next: The Cubs and Cardinals conclude their two-game series with a 1:20 matinee on Wednesday featuring Carlos Villanueva (1-2, 2.85 ERA) against Jake Westbrook (2-1, 1.07).