The Astros finalized their 25-man roster Sunday. The club purchased the contracts of veterans Rick Ankeil, Erik Bedard and Edgar Gonzalez. Alex White and Fernando Martinez will begin the season on the disabled list. The Astros’ 40-man roster is set at the maximum of 40. The Astros open the 2013 MLB season at 7 p.m. Sunday against the Rangers at Minute Maid Park. Astros’ 25-man opening-day roster Jose Altuve Hector Ambriz Rick Ankiel Brandon Barnes Erik Bedard Chris Carter Jason Castro Ronny Cedeno Xavier Cedeno Carlos Corporan Rhiner Cruz Matt Dominguez Josh Fields Edgar Gonzalez Marwin Gonzalez Lucas Harrell Philip Humber Fernando Martinez (disabled list) J.D. Martinez Justin Maxwell Bud [...]