The Athletics have claimed first baseman Nate Freiman from the Astros, according to the A's (on Twitter). The A's have placed Fernando Rodriguez on the 60-day DL to clear roster space for Freiman. Freiman hit .298/.370/.502 for the Padres' Double-A affiliate in 2012 before the Astros picked him in the Rule 5 Draft. He will need to stick on the Athletics' 25-man roster this season, or the A's risk losing him.