The Vikings had their last practices in Mankato Thursday and left for their winter park facilities in Eden Prairie.  The Vikings lost their preseason opener last Friday 34-17 to Seattle and play their 2nd of 4 preseason games at Baltimore Saturday night at 6:30, pregame on AM 1390-the Fan at 5:30.  Viking head coach Brad Childress says the starters will play into the 2nd quarter in tonight's game with Tavaris Jackson starting at quarterback followed by Gus Frerotte.  The other 2 quarterbacks on the roster are Brooks Bollinger and John David Booty.