Kalyani, Oct. 14 -- Defensive batting from Delhi and an unresponsive pitch ensured that Bengal's Ranji Trophy match stretched into a fourth day, but the visitors have left themselves with a mountain to climb. At stumps on Tuesday, Delhi were 101 for three in their second innings, still trailing Bengal's first-innings total of 429 by 88 runs, with two days' worth of resistance seemingly compressed into a contest that has struggled to find a pulse. Yash Dhull, meanwhile, retired hurt after taking a blow to the chest from Akash Deep. Bengal started the day with the advantage of two overnight centurions, Abishek Porel and Sudip Gharami, and the prospect of batting Delhi out of the game. The first hour yielded 52 runs for the loss of one wicket, a satisfactory return on a surface where uneven bounce made batting increasingly difficult. Gharami, who had resumed on his overnight hundred, departed for 133 when Divij Mehra found movement off the pitch and kept the ball low enough to trap him lbw. Porel continued to dictate terms, reaching 149 before an innocuous delivery from Hrithik Shokeen turned into an opportunity for Sanat Sangwan at short leg. By then, Bengal had secured a lead of 150, and the innings appeared well placed to deliver a commanding advantage....