Eyes will be on No. 1 draft pick Cooper Flagg and his Dallas Mavericks this July as his highly anticipated professional career begins. Flagg & Co. kicked off their summer league slate with a high-profile 87-85 win over a Los Angeles Lakers squad that features Bronny James.

LAS VEGAS — Jordan Walsh called his ejection Monday against the Heat a “rookie mistake.” His coach, Joe Mazzulla, watching from high in the bleachers of Cox Pavilion with his family, texted his young swingman and said he “loved” the fire.

Hugo Gonzalez was clearly frustrated with his play against the Heat as he struggled for stretches of the game.

The upshot of the Heat’s summer-league victory Monday night against the Celtics was that meaningful boxes were checked off.

But as painful as this offseason has been thus far for Celtics fans, those minutes up front for Boston is why big man Luka Garza opted to sign a two-year deal in free agency.

LAS VEGAS — Jordan Walsh was midway through a stellar Summer League game leading the Celtics, but his night got an early exit. Walsh was ejected with 3:34 left in the second quarter of the Celtics’ game against the Heat on Monday after a hard foul on the Heat’s Pelle Larsson.

Pacome Dadiet and the New York Knicks might still be able to put their best foot forward despite some early Summer League struggles. New York’s one-sided defeat

Brad Stevens has been assigned the responsibility of finding hidden gems and prospects who could flourish with a new opportunity. Enter two intriguing players from the Timberwolves.