CHICAGO (Interstat) — Shota Imanaga pitched seven crisp innings and the Chicago Cubs blanked the Arizona Diamondbacks 2-0 Saturday afternoon at Wrigley Field before 36,907 fans. Imanaga allowed four hits, struck out five and improved to 3-2. Ian Happ homered in the second inning and scored on a sacrifice fly by Seiya Suzuki in the eighth. Ben Brown earned his first save with two scoreless innings. Ryne Nelson took the loss, yielding one earned run over 5 2/3 innings while striking out four. The Cubs had five hits, the Diamondbacks four. Ildemaro Vargas went 0 for 4, ending his 27-game hitting streak. Chicago improved to 21-12; Arizona fell to 16-16. The game lasted 2:27.