Olympian Sudha Singh of Uttar Pradesh has booked her berth in the Moscow World Championship by setting a new national mark in 3000 meter steeplechase for women. Sudha Singh achieved the feat on the penultimate day of the 53rd National Athletics championships in Chennai today.27-year-old Sudha Singh, hailing from Rae Bareli and working in Central Railway, achieved the feat with a superb effort of 9 minutes 45.60 seconds. Sudha crossed the Moscow World Championship 'B' standard of 9:48 secs.Harayana's Kirantiwari claimed the Silver while Priyanka Patel of U.P. took the bronze in the event.The day also witnessed Kerala men quartet comprising Anuroop John, Ranjith KG, Shameer and Rahul G Pillai winning the 4×100 meter relay in meet record time.