Sent into bat, Tripura managed 283 all out in their first innings, but bowled out Goa for 269 to take a crucial first innings lead of 14 runs at the KIIT Stadium.
Tripura batted much better in their second innings, making a sporting declaration at 328/9 to set Goa a target of 343.
The Goans nearly pulled off the chase before ending their second innings at 328/8 in 71 overs.
In reply, skipper Sagun Kamat (78) and Sumiran Amonkar (41) put on 83 runs for the second wicket to lay the foundation for Goa.
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After the duo's departure, Snehal Kauthankar (63), Darshan Misal (59) and Saurabh Bandekar (55) made useful contributions, but in the end their efforts did not prove to be enough for Goa.
Points:
Tripura 3, Goa 1.