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Quinndary Weatherspoon scored 14 points in his summer-league debut Tuesday.
Moses Moody (4) drives up court in the first half as the Golden State Warriors played the Los Angeles Lakers summer league teams in the California Classic at Chase Center in San Francisco , Calif., on Sunday, July 3, 2022.
Gui Santos (15) drives to the basket in the first half as the Golden State Warriors played the Los Angeles Lakers summer league teams in the California Classic at Chase Center in San Francisco , Calif., on Sunday, July 3, 2022.
Warriors guards Quinndary Weatherspoon (left) and Klay Thompson (right) sit on the bench during practice before Game 3 of the NBA Finals in Boston on June 7. Weatherspoon scored 14 points in his summer-league debut Tuesday.
Winning doesn’t count as a high priority in summer league, but 0-3 probably isn’t what the Golden State Warriors envisioned for the San Francisco portion of their July schedule.
They closed out a three-game run at Chase Center by falling 94-70 to Miami on Tuesday. That completed the California Classic for the Warriors and sent them on their way to Las Vegas for the full-scale NBA summer league, which begins Thursday.
Tuesday’s game did produce one notable highlight: Second-round draft pick Gui Santos (12 points and five assists) threading a clever bounce pass between the legs of Miami’s Haywood Highsmith. Quinndary Weatherspoon took the pass and finished at the rim with a nice, twisting layup.
Weatherspoon, who appeared in 11 games this past season for the Warriors — and figures to contend for a roster spot next season — made his summer-league debut against the Heat. He scored 14 points and committed five turnovers in 25 minutes.
“The biggest thing with Q is making quick decisions,” said Warriors coach Seth Cooper, who also worked with Weatherspoon in the G League at Santa Cruz. “If he can be a better screener and quick decision-maker, those are things that translate into being a productive player for the Warriors.”
Gui Santos finds Quinndary Weatherspoon with a wild through the legs pass! pic.twitter.com/YhC3o6TUS6
Summer league offers a curious mix of rising young players (Moses Moody), recognizable journeymen (Weatherspoon) and anonymous, undrafted rookies. So it’s natural for inexperience and unfamiliarity to produce a lot of one-on-one play.
Moody, who struggled at times as the main ball-handler Sunday, relinquished some of those duties to Weatherspoon on Tuesday. Moody scored eight of his 13 points in the first quarter.
The Warriors had 15 turnovers in a mostly sloppy 40-minute game, though Cooper was encouraged by their 17 assists.
“I thought our ball movement was better today,” he said. “What could have helped that even more was rebounding a little better — that would have allowed us to get out in transition more.”
Center James Wiseman watched from the stands as the Warriors continue to proceed cautiously with him. Wiseman played in a 5-on-5 scrimmage Tuesday and could see some game action in Las Vegas.
Jamaree Bouyea, a rookie guard from USF, was impressive for Miami — he had 13 points and six assists in 22-plus minutes, including a slick, left-handed layup over Santos. The Heat outscored the Warriors by 31 points with Bouyea on the court.
The Warriors rallied to trim their deficit to one point late in the third quarter, before Miami pulled away. Golden State lost its three California Classic games by an average of 21.7 points.
Quiñones deal official: The Warriors made official Tuesday what had been reported previously, the signing of undrafted guard Lester Quiñones to a two-way contract. Quiñones, who played at the University of Memphis, averaged 9.7 points in his first three summer-league games.
Ron Kroichick is a San Francisco Chronicle staff writer. Email: rkroichick@sfchronicle.com Twitter: @ronkroichick
Sports enterprise reporter Ron Kroichick has worked at The San Francisco Chronicle since 1995, when he came from The Sacramento Bee. Kroichick writes features on the Warriors during the NBA season, and various other topics - ranging from the 49ers/NFL and major-league baseball to college football and basketball - the rest of the year. He's also The Chronicle's golf columnist, covering the AT&T Pebble Beach Pro-Am and all major championships in Northern California. In 2016, Kroichick and photographer Michael Macor earned "Best Sports Feature" from the California Newspaper Publishers Association, for their series on Antioch High running back Najee Harris, the nation's No. 1 college football recruit. In 2021, Kroichick earned an Associated Press Sports Editors Top 10 award for his feature on Stanford quarterback Tanner McKee conquering cancer.