The San Antonio Spurs beat the Dallas Mavericks 122-106 on Saturday night at American Airlines Center, handing Dallas a loss in its home opener.

According to nba.com, the game was tight deep into the fourth quarter — the Spurs led just 92-91 with 11:32 remaining — before San Antonio outscored the Mavericks 30-15 the rest of the way. Both teams moved to 1-2 on the season with the outcome.

Victor Wembanyama's 23 points powered a San Antonio unit that saw six Spurs score in double figures, per Yahoo Sports.

The night's real story was a breakout few expected. Mavs Moneyball graded Spanish rookie Sergio De Larrea at A+, noting he led the Mavericks in scoring with 21 points, 5 rebounds and 4 assists in 32 minutes off the bench — just three games into his NBA tenure.

Dallas played without Cooper Flagg (shoulder) and Kyrie Irving (rest), and Yahoo Sports reports De Larrea scored his first NBA points on a floater in the lane and finished the first half with 12 points on 75% shooting, including his lone three-point attempt.

Mavs Moneyball's player grades describe a nearly flawless night: De Larrea shot 9-of-15 from the floor, banked in two nearly identical floaters in the first half, and finished a reverse layup off a nice pass.

After awkward moments in his first two games, the publication wrote that he 'looked like an experienced NBA veteran.'

Yahoo Sports adds that De Larrea took Spurs point-of-attack defender Stephon Castle to the rim for a lead-taking floater in the third quarter, and that he and Naji Marshall combined for seven assists against only two turnovers in the first half.

Dallas managed to stick with its opponent early for the third straight game, per Yahoo Sports, even starting the second quarter shooting 75% from the field and building a lead as large as six.

But Daniel Gafford picked up his third foul early, and the Spurs answered with an extended 23-11 run to lead by eight at the half.

The Mavericks then turned the ball over six times in five minutes in the third quarter, and Mavs Moneyball notes Dallas gave up too many offensive boards that became second-chance points for San Antonio.

Mavs Moneyball concluded that the game affords Dallas much-needed guard depth it was unsure of coming into the season, with Marcus Sasser earning an A- for 12 points, 5 assists and 5-of-9 shooting off the bench.

Yahoo Sports reports the Spurs (1-2) return home to face the Sacramento Kings on Tuesday, while Dallas (1-2) hosts Giannis Antetokounmpo and the Miami Heat on Monday.