VANCOUVER, British Columbia —Abby Wambach sat at a table with three different drinks in front of her; tea, water and a yellow sports drink loaded with electrolytes. Along with the rest of the U.S. women’s national team, Wambach had been ordered into the sauna by the training staff after practice on Friday. Now the lineup of hydrating fluids was another sign of extensive regimen the U.S. has been put through en route to this 2015 Women’s World Cup final.”We were in the sauna today after practice so we can get acclimatized to the 75-degree heat we’re going to be seeing,” Wambach said, adding: “All these scientific approaches you have to take. Who knows if I’m going to start, but I have to prepare as if I am starting. I have to prepare as if I’m going to go on the field at any moment and make that difference. Big players show up at the big moments.”About 50 hours separated Wambach from the most fateful moments of her storied and stellar career. On Sunday, the U.S. women’s national team plays Japan in a rematch of the 2011 World Cup final (LIVE on FOX, coverage starts at 5 p.m. ET). That Japan…