Jaylen Brown's 'Validation?', Jayson Tatum's return, and are the Celtics contenders?

Jaylen Brown earns an All-Star starting nod, but is "validation" really the right word? John Karalis of Celtics on SI digs into Brown’s evolution with the Boston Celtics, what this milestone means for the team’s dynamic with Jayson Tatum, and why the “Jayson vs. Jaylen” debate needs to end. The conversation spotlights Brown’s mentality, the chemistry with coach Joe Mazzulla, and how both stars position themselves for postseason success. Attention turns to Jayson Tatum’s highly anticipated comeback, analyzing his latest on-court workout and the crucial steps remaining before his return. Can the Celtics truly contend for a championship without major moves, or will reinforcements at center be essential for a deep playoff push? Karalis breaks down the Eastern Conference landscape, possible trade scenarios involving players like Anfernee Simons and Sam Hauser, and what Brad Stevens might be “cooking” ahead of the NBA trade deadline.