2026 NBA free agency begins with major frontcourt swings: Walker Kessler to Lakers, Mitchell Robinson to Celtics

The 2026 NBA free agency period began at 6 p.m. ET Tuesday night, and it did not take long for the market’s headline big men to find new homes. According to the early tracker from CBS Sports, Walker Kessler and Mitchell Robinson were among the first prominent centers to reach agreements, setting an immediate tone for a class of moves that could ripple across the Eastern and Western Conference title picture.

Kessler, a defensive-minded center, is set to join the Los Angeles Lakers via a sign-and-trade with the Utah Jazz, CBS reported. The reported structure matters for roster planning and team-building, because sign-and-trade deals allow teams to coordinate cap and contractual considerations while still changing the player’s destination. CBS also reported the financial terms as a four-year, $130 million agreement, with the Lakers aiming to align the move with their roster’s top-end offensive core.

The fit in Los Angeles is positioned around the Lakers’ current star power. CBS’s tracker described Kessler’s arrival as a chance to team with Luka Dončić, indicating that the Lakers view the center spot as a key piece for both end-of-game defense and interior stability. In that context, the early timing of the agreement suggests the Lakers were not waiting for the rest of the market to clarify, instead prioritizing a specific frontcourt profile once it became available.

In the East, Robinson’s next destination is even more consequential for a contender’s matchups. CBS reported that the center is leaving the champion New York Knicks for their rivals in the Boston Celtics, after Boston agreed to a three-year contract worth $47.4 million. The chessboard effect is straightforward: Robinson’s addition gives Boston another interior presence at a time when playoff games often turn on rebounding, rim protection, and the ability to defend multiple offensive styles without forcing lineup compromises.

Robinson’s move also highlights how quickly player availability can translate into rapid departures once teams identify the right role. CBS framed Robinson as a leaving player from the Knicks, meaning New York will have to replace production and defensive responsibilities rather than simply plug in a like-for-like starter. For the Celtics, the reported deal length and total value indicate a longer-term plan for frontcourt continuity rather than a short-term patch.

While these two agreements represent early progress, they are only the beginning of the free agency window. CBS’s tracker was built around the idea that multiple notable names could change teams over the coming days, implying the league is likely to see additional negotiations cascade after the first wave of deals. Teams will also have to consider how sign-and-trade mechanics and contract numbers affect what they can do next, especially when multiple bigs are available at once.

For fans and roster watchers, the next question is whether the Lakers and Celtics’ early center upgrades prompt counter-moves elsewhere. The two reported frontcourt decisions could reshape playoff rotations and matchup plans, particularly against opponents built around physical interior play or pick-and-roll heavy offenses. As more players agree to deals, the market will clarify which remaining teams can compete for the next tier of roles, and which will pivot to minimums, trades, or late free agency.