Undefeated 2019 G1 St Leger hero Logician (GB) (Frankel {GB}), who races in the Juddmonte colours of Prince Khalid Abdullah, has returned to the John Gosden yard after being treated for peritonitis, Racing Post reported on Thursday. Also a winner of the G2 Great Voltigeur S. in August, the grey 4-year-old's return to the races will be a bit delayed, but he is likely to appear by early summer. "Logician was successfully treated for peritonitis which can be a serious condition," said Prince Khalid Abdullah's racing manager Lord Teddy Grimthorpe....