TOKYO — Simone Biles was pulled from the team competition here Tuesday after an awkward, low-scoring attempt on vault, leaving the United States, which was already locked in a tough battle with Russia, in serious trouble as it seeks its third consecutive gold medal. Biles bailed out on her expected vault, attempting just a Yurchenko 1.5. She still needed a massive bounce/stumble upon landing. She looked to be in tears as she left the mat and then soon walked out of the arena floor with a trainer from USA Gymnastics. She did not appear to suffer any obvious physical injury...