Russian doping scandal spreads to wrestling, sports minister prepared to quit (Reuters)
* Wrestlers could miss Rio, federation chief says * International federation surprised by positive tests (Updates with United World Wrestling reaction) By Jack Stubbs MOSCOW, March 22 (Reuters) – Russia’s sports minister said on Tuesday he was prepared to resign over a raging doping scandal in his country which could cost more Russian athletes their places at the Rio Olympics after “tens” more cases of cheating were exposed in wrestling. …