Personally if it is me and I have a 1 on 1 tournament take place during NBA All Star weekend...I would have games take place on all 3 days of NBA All Star weekend with the Final of the tournament taking place on the Sunday, like hours before the NBA All Star Game itself.

Friday- 1 on 1 Tournament Games from 12pm to 6pm, Celebrity Game at 7pm, Rising Stars Game at 9pm

Saturday- 1 on 1 Tournament Semi Final Games take place at 4pm to 6pm, NBA Saturday weekend starts at 8pm

Sunday- 1 on 1 Tournament Final takes place at 5pm...then you have the All Star Game at 8pm