Heres the main things you need to know before tipoff.

PHOENIX — The Dallas Mavericks are rebuilding around Cooper Flagg, but they aren’t starting from scratch. Several players on the roster could be long-term fits around the 19-year-old rising star, which won’t require the Mavericks to rely solely on bringing in external pieces to complete the full puzzle needed to be competitive again in the Western Conference.

The Mavericks look to bounce back against the Spurs on Saturday as the I-35 Rivalry renews in San Antonio.

Both the San Antonio Spurs and Dallas Mavericks may be without multiple key players in Saturday night's matchup.

SAN ANTONIO — Stephon Castle kept his eye on the ball as it bounced high off the back of the rim and perfectly into the palm of his hands as several members of the Dallas Mavericks could only watch. The San Antonio Spurs guard slammed the ball through the rim with one hand and he celebrated his new career-high of 40 points with a smile and scream.

Dallas Mavericks (19-32, 12th in the Western Conference) vs. San Antonio Spurs (35-16, second in the Western Conference)San Antonio; Saturday, 6 p.m. ESTBOTTOM