The Astros have signed 18-year old Nicaraguan first baseman Mesac Laguna (captip to MLBTR).
Thanks to the wonder of two years of college Spanish and Google Translate, we can find these tidbits:
Laguna is 6'2, 190lbs
He was signed by the Astros' Nicaraguan scout Leo Guevara
Laguna will play in the Venezuelan or Dominican Winter League in 2010