Kolkata, Oct. 12 -- Mohammed Shami started yet another domestic season on a commanding note, taking four wickets for 30 runs as Bengal bowled Delhi out for 240 on the opening day of their Ranji Trophy encounter at Kalyani on Sunday. His figures crowned a disciplined effort from a seam attack that made the ball move, denied Delhi easy scoring and repeatedly exposed uncertainty outside off stump. Shami was not alone in setting the tone. Akash Deep and Mukesh Kumar troubled Delhi through the morning, making the ball come in and leave the batters. Sanat Sangwan was the first to fall, Akash Deep getting one to nip back from just wide of off stump and take the top of leg. It was an early warning that the crease offered little security. Yash Dhull struggled to settle against the movement. Akash kept pinning him on the pads, while Dhull tried to counter the swing by coming forward. He managed to drive Akash, but the shot lacked the pace to reach the boundary. The pressure eventually told: attempting to play forward against the moving ball, Dhull edged Shami behind to Abishek Porel. Delhi reached lunch at 89 for three, with Ayush Badoni on 13 and Ayush Doseja on 25. The score suggested a recovery was possible, but the reprieve proved temporary. Sarthak Ranjan and Doseja added 47, offering resistance through a period when Bengal had to work harder for a breakthrough. Doseja, in particular, looked capable of anchoring the innings, showing patience as the bowlers maintained their lines. Badoni's dismissal reopened the door. In the sixth over after lunch, he chased a Mukesh Kumar delivery wide of off stump and offered a simple catch. Anuj Rawat followed when Akash Deep finally found the answer to a recurring contest: after taking middle-stump guard and trying to negotiate several incoming deliveries, Rawat was trapped leg before by Akash with a delivery that came back sharply. Doseja's innings ended on 45, a substantial contribution undone by a plumb lbw by Shami who by then had a remarkable economy of just one. It was a costly loss for Delhi, who had needed their set batter to turn resistance into a platform. Gani continued to make inroads. Dev Lakra attacked a ball in his hitting arc but drove it straight to Mukesh Kumar at mid-off, leaving Delhi 148 for seven. At tea, Delhi were 164 for seven, with Divij Mehra on 12 and Hrithik Shokeen on 10. Their task was to extend the innings and give the bowlers something to defend, but Shami returned to ensure the tail could not build a meaningful finish. Mehra hesitated between leaving and playing; the ball took its chance, ricocheted off him and crashed into the stumps. Shokeen and the remaining batters could not change the direction of the innings. Navdeep Saini, after occupying the crease for 38 balls, was trapped on the back leg by Gani. Shami's four-wicket haul gave Bengal the standout individual performance, while Gani's strikes and the early work of Akash Deep and Mukesh made it a collective dismantling. The value of Shami's return was in the method as much as the figures. He offered no easy release, kept batters unsure of whether to play or leave, and turned that uncertainty into wickets. Delhi's 240 was not a total built on sustained control, it was the product of brief resistance interrupted by movement, pressure and poor choices. Bengal's attack had kept the innings in check from the first spell to the last, and Shami supplied the decisive blows alongwith a fabulous economy of 1.71. A fine unbeaten 80 (176 balls, 8 fours) by captain Siddhesh Lad and a patient half-century by young Musheer Khan helped Mumbai reach 249/5 after 84 overs against a spirited Chandigarh side on the opening day of the Ranji Trophy game at the Wankhede Stadium. The Chandigarh bowlers, led by pacer Rohit Dhanda (3/44), made the batters work hard for their runs. Mumbai were in a spot of bother at 184/5 before Shams Mulani scored a brisk unbeaten 27 (46 balls) to add 65 runs in 98 balls with Lad in their unfinished sixth wicket partnership. In batting, positive intent is important. On a first day's pitch at the Wankhede Stadium, the team batting first is expected to make merry and set the tone for a four-day contest. Mumbai's top order struggled to put the Chandigarh attack under pressure by adopting a surprisingly cautious approach after being asked to bat first. Ayush Mhatre (48), Musheer Khan (65) and captain Lad spent considerable time at the crease but could not take charge....