The Rangers have signed veteran first baseman Carlos Pena to a Triple A contract and assigned him to Round Rock. He gives the Rangers another option at first base in the absence of Prince Fielder and Mitch Moreland.

Here is the official release:

Arlington, Texas – The Texas Rangers announced today that the club has signed first baseman Carlos Pena to a minor league contract and assigned him to Triple-A Round Rock. Pena is expected to be active for the first time either tonight or tomorrow.

Pena, 36, returns to the club that originally selected him in the first round (10th overall) of the 1998 June draft. He made his major league debut with the Rangers in 2001. He has a career .233 average with 285 home runs for Texas (2001), Oakland (2002), Detroit (2002-05), Boston (2006), Tampa Bay (2007-10, 2012), Chicago-NL (2011), Houston (2013), and Kansas City (2013).