A day after India pacer Mohammed Shami hailed the 'radium-like' ball in his five-wicket haul, Ghosh made it really special with his 125 as it was the pink experiment that emerged the winner, giving both batsmen and bowlers something to rejoice.
A former India U-19 batsman, Ghosh who was unbeaten on 49 in his overnight score, battled severe hot and humid condition in the afternoon to lead Mohun Bagan to 349 from 88.1 overs in the second innings, setting Bhowanipore a target of 496.
The Railways Ranji batsman made batting look easy as he shared an 84-run stand with Anustup Majumdar (39), the first innings topscorer with 83, while No 8 Sanjib Sanyal lent a fine 75-run partnership with a 68-ball 51 (7x4, 1x6).
There was some cheer for Bhowanipore seamer Ayan Bhattacharya who claimed 6/96 en route to bowl out Mohun Bagan in 88.1 overs.
In reply, Bhowanipore were 132/6 in 35 overs, still needing 364 to win with Shami (2/79) snaring the first two wickets in a marathon 15-over spell.