Even though Cooper Flagg stole the show for the Dallas Mavericks at NBA Summer League and put the league on notice, he wasn't the only rookie for Dallas who proved that they can be an impact player on day one.
Both Ryan Nembhard and Miles Kelly had some incredible moments while out in Las Vegas, and if their strong Summer League performances carry into the 2025-26 season, Jason Kidd and Nico Harrison could have some controversial decisions to make when it comes to the rotation for Kidd, and potentially the roster for Harrison.
Kelly and Nembhard are on two-way deals, meaning that they can each suit up for 50 games while also being allowed to play in the G League for the Texas Legends, and both players are going to be in the perfect spot to succeed as rookies.