The Houston Astros announced on Tuesday that they have placed right-handed pitcher Lance McCullers Jr. on the 15-day injured list due to a right finger blister.

Diamondbacks starter Eduardo Rodriguez hasn't pitched since a loss on July 10 in San Diego. He's given up five home runs in his past two starts.

Each of this season's contenders has at least one hole on their roster. Here's how they might fix that before July 31.