Mohun Bagan's winless streak stretched to four matches as Sporting Clube de Goa rode on a Boima Karpeh double strike for a 2-1 win in the I-League at the Yuba Bharati Krirangan here on Saturday.
The Liberian-Australian recruit, who was with Pune FC last season, scored in the 17th and 78th minutes while Mohun Bagan struck in the 84th minute through a penalty taken by Eric Muranda.
With their second win of the season, the Goans now have seven points, while Mohun Bagan remained on two with two draws and two losses.
Once again, Mohun Bagan missed their Nigerian ace Odafa Okolie who is recovering from an injury as the home side could not exploit the home advantage for a humiliating loss.
Mohun Bagan squandered two chances early into the start with C S Sabeeth and Muranda failing to score.
Sporting Clube, on the other hand, took the lead in their first chance they got when Boima deceived Aiborland Khongjee to fire home.
Boima scored his second goal after getting a through ball from substitute Dawson Fernandes and then beat Wahid Sali before tapping the ball in.
In the 84th minute, Ram Malik's cross hit the hand of Mathew Gonsalves inside the box as referee pointed to the spot and Muranda converted to score the solitary goal for Mohun Bagan.