By Matt Martell As soon as Padres starter Yu Darvish walked Mookie Betts to lead off the fifth inning of last night’s NLDS Game 2 at Dodger Stadium, nearly everybody watching the game knew Betts would try to swipe second base. And almost certainly, he would be safe. The score was tied, 3–3. Getting into scoring position would give the Dodgers three chances to drive him in, with Trea Turner, Freddie Freeman and Will Smith due up next. In what had been a back-and-forth game, that run might have just been the one that would give Los Angeles a 2–0 lead in this best-of-five series. The Padres this …