It was a fine all-round performance by Yuvraj while Rahul took five wickets, his best in T20s. Andre Russell took four wickets in four balls but that superb effort went in vain.
After posting 214/7 in 20 overs, India A dismissed the visitors for 121 in 16.2 overs at the M Chinnaswamy Stadium here.
India A had something to cheer after losing the three-match one-day series 2-1 at the same venue on Thursday.
Now, the teams will play three four-day matches starting in Mysore on September 25.
Here are the pictures from the match.
Five-star Rahul Sharma
Rahul Sharma took five wickets to derail West Indies A chase.
Half century for the captain
Yuvraj Singh celebrates his half century. He made 52 off 35 balls with 4 fours and 3 sixes.
A fine catch by Unmukt Chand
Unmukt Chand takes a fine catch to dismiss Ronsford Beaton off Rahul Sharma.
Rahul Sharma stars with the ball
Unmukt Chand shares a light moment with Rahul Sharma after the latter took a wicket.
Time for some fun
Robin Uthappa and Yuvraj Singh share a light moment with Unmukt Chand.
Unmukt Chand and Robin Uthappa start well
Unmukt Chand plays a shot. He and Robin Uthappa gave India A a blazing start. The first wicket stand was 74 in 6.4 overs. Chand made 47 off 29.
Andre Russell takes four in four
Andre Russell (right) celebrates his hat-trick. He took four wickets in four balls.