The Dallas Mavericks and Boston Celtics met in Dallas on Saturday for their first matchup since last season's NBA Finals. Dallas was missing many key pieces, including starters Luka Doncic and Dereck Lively II, while Boston was wrapping up a four-game road trip.

No Luka Doncic for the 16th straight game. Dereck Lively II in a giant walking boot. Reigning Western Conference champion Mavericks wobbling in play-in territory. In those and other vivid ways, much had changed in the 222 days since Dallas and Boston last met,

DALLAS — Jayson Tatum scored 24 points, Derrick White added 23, including Boston’s first 11 of the third quarter, and the Celtics beat the Dallas Mavericks 122-107 on Saturday night in the first meeting between the teams since the NBA Finals.