Chahar was the lone new face across three formats for the tour to the Caribbean after he was named in the T20 squad.
With several players rested or dropped, the selectors have turned to India A performers.
Chasing 237, India A won by seven wickets in 33 overs at Coolidge in Antigua.
Rahul, who had an impressive IPL 2019 with Mumbai Indians and scalped 14 wickets for India A against Sri Lanka A in May this year, will join his cousin Deepak Chahar during the three-match T20Is against West Indies.
Bumrah ended this IPL edition with 19 wickets from 16 matches with an impressive economy rate of 6.63.
Chahar bowled 13 dot balls finishing with superb figures of 1 for 14 in 4 overs, bringing Mumbai Indians back in the match.Chahar bowled 13 dot balls finishing with superb figures of 1 for 14 in 4 overs, bringing Mumbai Indians back in the match.
Mumbai Indians clinched a last-ball thriller against Chennai Super Kings to win their fourth IPL title, the most by any team in history.
The presence of multiple match-winners has led to the consistent success of Mumbai Indians in the IPL, feels coach Mahela Jayawardene.
Mumbai Indians made their fifth IPL final with a big win over arch-rivals Chennai Super Kings in the Qualifier 1 of IPL 2019 at the MA Chidambaram Stadium, Chennai on Tuesday. This was MI’s third win over CSK this season the fourth straight win.