After restricting the Heat to 8/126 from the 20 overs, the Sixers reached 2/127 with 25 balls remaining. The win closed the gap to the Melbourne Stars at the top of the BBL|09 table to three points.
Opening for the first time together in BBL|09, England international James Vince and Josh Philippe made classy fifties sharing a 75-run partnership from 55 balls.
Philippe finished unbeaten on 52 from 43 balls, including four boundaries and one six. While, Vince made a pure 51 from 37 balls, featuring eight fours and a six, his highest score of BBL|09.
Smith (9) missed out with the bat, but made an impact in the field taking three catches.
Not for the first time this season, the Sixers bowling attack were very effective.
Seamer Jackson Bird was one of three multiple wicket takers taking 2-21 from his four overs. Pacemen England allrounder Tom Curran (2-25) and left-arm quick Ben Dwarshuis (2-35), were the other two.
However, the spin of Stephen O’Keefe, 1-20 from four overs, and Nathan Lyon with 1-24 from his four, were key in creating pressure at the top of the order.
The Sixers next match is against the Melbourne Renegades at the SCG on Saturday afternoon.