Chadha's win set the tone for SPG Billiardiers 3-1 win over Rrockets in the best-of-five frames 7th and final round- robin league match.
That win also helped Billiardiers finish in second place behind leaders Mumbai Stars and qualify for the knockout stage of the tournament.
Rrockets and Adamo Potters finished third and fourth respectively and also progressed to the next round.
Mumbai Stars topped the league after going down 2-3 to Rrockets in the 6th round, their first defeat so far.
Mumbai Stars' Ashok Shandilya also suffered his first defeat during the sixth round of the competition when he lost to Sarang Shroff of Rrcokets.
He recovered to win the fourth frame against Subhash Agrawal to level the scores, but his teammate Hasan Badami was comprehensively beaten by Haria in the deciding game.