Mumbai, Feb. 9 -- The Mumbai-Karnataka Ranji Trophy quarter-final was tantalisingly poised after the third day's play here, with the visitors requiring another 212 runs and the hosts needing eight wickets for victory. The first session of play at the MCA-BKC ground, which has swung things drastically in this contest so far, could prove crucial on the fourth day. It did on Sunday too as Mumbai, resuming on their overnight score of 189/2, collapsed to 287/7 by lunch after the Karnataka bowlers extracted the help on offer in the morning session. Valuable lower order runs from Tanush Kotian (48 not out) and Tushar Deshpande (47) extended Mumbai's total to 377 from there, which set Karnataka a stiff target of 325 for victory. Karnataka were 113/2 at stumps, with KL Rahul batting on 60. A lot could rest on the experienced India player's shoulders as far as the visitors' chances are concerned. After Shardul Thakur accounted for Mayank Agarwal, who had made a fine 92 in the first innings, early, Rahul and Devdutt Padikkal stitched a solid 84-run stand. They looked set to add more to it, until Yashasvi Jaiswal took a brilliant catch low to his left at first slip with off-spinner Kotian getting Padikkal to slash at a delivery. Earlier, Mumbai could not build on their second day dominance as both overnight batters, Musheer Khan and Akash Anand, perished without adding too many more runs. Siddhesh Lad and Suryansh Shedge got starts but could not capitalise on them. Brief scores: Mumbai 120 & 377 in 98.3 overs (Akash Ananad 70, Musheer Khan 49, Tansh Kotian 48, Tshar Deshpande 47; Shikhar Shetty 3/45) vs Karnataka 173 & 113/2 in 29 overs (KL Rahul 60 batting, Devdutt Padikkal 39; Tanush Kotian 1/13)....