Anna Kalinskaya dug deep. The Russian, two points from defeat in the third set against pal Anastasia Potapova, rallied from 4-1 down to win an improbably match tiebreak to punch her ticket into the quarterfinals of the French Open on Monday, taking a 6-4, 2-6, 7-6(7) win. “I’m shocked, I can’t believe the match is...