Mumbai/Chandigarh, Jan. 30 -- Riding on pacer Mohit Avasthi's 5/62, Mumbai pegged Delhi back after a fine century from opener Sanat Sangwan on the first day of their Ranji Trophy Group D match at the MCA-BKC ground on Thursday. From 111/1, Delhi were bowled out for 221 after being asked to bat. Mumbai were 13/1 at stumps. Sangwan waged a somewhat lone battle, scoring 118 off 218 balls (11x4s, 2x6s). He stitched a 100-run second-wicket stand with No.3 Vaibhav Kandpal. Once Shams Mulani dismissed the latter, Delhi crumbled. Avasthi ripped through the middle order, sending back Aryan Rana and captain Ayush Doseja within a space of three balls before also removing Sumit Mathur. Sangwan's slog sweep off Mulani was then caught sharply by Tushar D...