(1,2,4,7) is family of no.
So 1 is lucky for 7
Chennai Super Kings won by 2 runs against Kolkata Knight Riders 
Winning Captain Dhoni is no.7 (July 7, 1981) running in his lucky 34th(7) year.He won on his lucky day 28th(1) April
Man of the Match is Dwayne Bravo is no.7 (7 Oct.) on his lucky day 28th(1) April 
On the other hand kkr captain gambhir is no.5 (14 oct.) it was his unlucky day.he also got out on zero.