His selection into the Indian Cricket Team (Before World Cup) : After the coffee with karan show, two greats for their abusive comments H Pandya and K L Rahul have been suspended from the team and there was a tour of Australia and he made a sound mark there. Even though his performance was not up to the mark but still that guaranteed him a place for the upcoming series.
His selection into the CWC 2019 : Ambati Rayudu is the batsmen who played at number 4 for India till the CWC 2019 though he has given good performances , he failed very badly at the IPL 2019 . Vijay Shankar has given some good performances (may be a little better than Ambati Rayudu) in the IPL 2019. That gave him the golden chance to get into the WC squad.
How he made into the playing 11 (in CWC 2019) : Dhawan has been injured during the match with the Australia. This has forced him not to play for 3 weeks , which further made him to fly back . So after Dhawan got injured, Rahul who was batting at number 4 was promoted to number 1 and Kohli always plays at number 3. Now the number 4 was vacant . To fill this position he was picked as a batsmen and a part time bowler who can bowl 5 overs.
His first ball wicket in WC: During the match , Bhuvaneswar had to go out of the field due to a minor nibble , so there was no bowling option left for Kohli . He went to Vijay and asked him to bowl . He was bowling to Imam, he just got a wicket of the first ball in the form of an lbw against a very old rival pakistan.
So we need to work hard to give a tough competition. If a pinch of luck gets added to that , trust me you can become an another Vijay Shankar .