By Joseph Wilkinson From New York Daily News Willie Ross has now equaled his sons in saves at an MLB ballpark. Ross, father of Nationals pitcher Joe Ross and Rangers pitcher Tyson Ross, saved a woman from choking Saturday with the Heimlich maneuver at a Nationals-Giants game in San Francisco. “I saw her having some difficulties, and I saw her companion helping her out,” Ross told the San Francisco Chronicle. “Then I just started watching, making sure that she was OK, and I went over just to chat, and she couldn’t talk, she needed help. She had three pieces of hot dog lodged in her airway.” Ross calmly performed the Heimlich, getting the woman to spit out the hot dog chunks, much in the manner of Dr. Archie “Moonlight” Graham. He lives in the Bay Area and is a pediatrician at Stanford Children’s Hospital, the Chronicle reported, so he likely …