Uthappa, named Man-of-the-Match slammed 13 boundaries in his 86-ball 88, as India raced to 229 for two with 5.2 overs to spare chasing Sri Lanka’s 225.
The victory was also a sweet revenge for Indians who earlier had lost to Sri Lanka in the qualifying round.
Indian skipper AT Rayudu who scored unbeaten 57 and Rakesh Solanki who made
undefeated 56 ensured victory putting on 93-run for third wicket.
Rayudu smashed seven boundaries and two huge sixes in his 53-ball knock.
Solanki played a patient knock and hit only two fours in 95-ball inning.
India after winning the toss and decided to field and the decision worked well as Sri Lanka lost four wickets for 43 by the 12th over.
Sri Lanka recovered through skipper Farvaiz Maharoof (57 off 67 deliveries) and Ratnayake (45 off 67 balls) who put 100 for the fifth wicket wicket to lift the total to 143.
The dismissal of Maharoof and Ratanayke triggered another collapse and the whole team was out for 225 in 49.4 overs.
Irfan Pathan adjudged Man-of-the-Tournament finished the competition with 18 wickets for 133 runs.
Scoreboard
SRI LANKA:
A. Kularatne c Karthik b Sunny 12
H. Vithana lbw b Pathan 6
W. Tharanga c Sunny b Raina 13
J. Silva lbw b Pathan 0
R. Ratnayake run out 45
F. Maharoof lbw b Sunny Singh 57
G. de Silva c Shukla b Sunny 16
C. Kulasekara b Pathan 29
A. Mathews not out 15
R. De Zoysa run out 3
P. Chanaka run out 2
EXTRAS: (LB-3,W-20, NB-4) 27
Total: (all out, 49.4 overs,) 225
FALL OF WKTS: 1-23, 2-25, 3-28, 4-43, 5-143, 6-163, 7-179, 8-214, 9-220.
BOWLING: Irfan Pathan 9.4-1-33-3 (4w); VR Singh 9-0-56-0 (2nb, 8w); Sunny Singh 10-2-35-3 (1w); Suresh Raina 3-0-11-1; Avinash Yadav 6-1-25-0; Shivkant Shukla 2-0-8-0; Piyush Chawala 10-0-54-0 (2nb, 1w).
INDIA:
AR Uthappa lbw Mattews 88
SK Shukla run out 19
RK Solanki not out 56
AT Rayudu not out 57
EXTRAS (LB-2, W-4, NB-3) 9
TOTAL (for 2 wkts, 44.4 overs) 229
FALL OF WKTS: 1-54, 2-136.
Did not Bat: S.Raina, Avinash Yadav, Sunny Singh, K. Karthik, I. Pathan, Piyush Chawala, V. Singh.
BOWLING: Farvaiz Mahroof 8-0-40-0 (w3); Manoj Chanaka 6-0-31-0 (w1); Kosala Kulasekara 6-1-16-0; A. Mattews 6-0-30-1(nb2); Zudheera Zoysa 8.4-0-57-0; Ganganath Rataynke 9-0-53-0 (nb1); Vithana 1-1- 0-0.