New Delhi, Nov 4 (UNI) Left-arm spinner Harsh Dubey emerged as the standout performer of the latest Ranji Trophy round, claiming 14 wickets in Vidarbha's emphatic innings and 20-run victory over Madhya Pradesh, as Karnataka, Goa and Uttarakhand also registered convincing wins on Wednesday. Dubey returned match figures of 14 for 90, including nine for 53 in the first innings and five wickets in the second, to help Vidarbha record their fourth consecutive victory in Elite Group A. Vidarbha's victory was particularly impressive considering they were reduced to 87 for six while responding to Madhya Pradesh's first-innings total of 209.…