The Golden State Warriors, Milwaukee Bucks and Brooklyn Nets were among the victors as the NBA’s inaugural in-season tournament began.

A last-second layup from Steph Curry was the difference for Golden State in their 141-139 group stage win over the Oklahoma City Thunder.

Curry finished with 30 points, eight rebounds and seven assists, while Lu Dort top-scored for the Thunder with 29.

It also went down to the wire in Portland, where the Trail Blazers eclipsed the Memphis Grizzlies 115-113 in overtime.

After a back-and-forth first half, neither side was able to gain much of an advantage through the final two quarters.

Shaedon Sharpe’s clutch free throws drew the Trail Blazers level with eight seconds left on the clock before he blocked Luke Kennard’s attempt from the corner on the other end to force overtime.

Both teams continued to trade baskets until Jerami Grant’s late three proved enough to get Portland across the line.

A late flurry from Damian Lillard lifted the Milwaukee Bucks over the New York Knicks 110-105.

He finished with 30 points, including two clutch threes in the dying minutes, while Giannis Antetokounmpo added 22 points and eight rebounds.

The Brooklyn Nets defeated the Chicago Bulls 109-107 on the back of 41 combined points from Dorian Finney-Smith and Mikal Bridges.

Elsewhere, the Miami Heat beat the Washington Wizards by seven points, Myles Turner scored 27 to lead the Indiana Pacers over the Cleveland Cavaliers 121-116, and the Denver Nuggets cruised past the Dallas Mavericks 125-114.

The in-season tournament sees each NBA team play a four-game group stage in November, with the group winners advancing to knockout rounds.

The winning team claims the NBA Cup, and its players earn 500,000dollars each, with the final to be played in Las Vegas on December 9.

Jaylen Brown and Jayson Tatum grabbed 69 points between them as the Boston Celtics cruised to a third straight win with a 126-107 victory over the Washington Wizards.

Brown scored 36 points and Tatum 33, Kristaps Porzingis adding 15 on his return to Washington after an off-season move between the clubs.

It is the second successive season the Celtics, who reached the Eastern Conference finals last time out, have begun with three straight wins.

Their efforts were eclipsed by Dejounte Murray, who matched his career-best haul with 41 points as he helped the Atlanta Hawks come from 19 points down at half-time to beat the Minnesota Timberwolves 127-113.

Steph Curry shrugged off the absence of Klay Thompson with a knee injury as he inspired the Golden State Warriors to a 130-102 win at the New Orleans Pelicans.

Curry scored 42 points, opening with a pair of three-pointers from 25 feet and wrapping his scoring up from 31 feet.

The Dallas Mavericks remain unbeaten as Luka Doncic grabbed a triple-double with 35 points, 12 rebounds and 12 assists in a 125-110 win over the Memphis Grizzlies.

Nikola Jokic also recorded a triple-double – his second of the season – with 27 points, 11 assists and 10 rebounds as the Denver Nuggets saw off the Utah Jazz 110-102.

Giannis Antetokounmpo scored 33 points for the Milwaukee Bucks as they avenged being eliminated by the Miami Heat in last year’s play-offs with a 122-114 win, despite 35 points from Tyler Herro.

Cam Thomas scored 33 points as the Brooklyn Nets beat the Charlotte Hornets 133-121 for their first win of the season, while Nikola Vucevic inspired the Chicago Bulls as they came from behind late to inflict a first defeat on the Indiana Pacers, 112-105.

The Portland Trail Blazers also claimed their first win, Jerami Grant scoring 22 points as they beat the Toronto Raptors 99-91, while 32 points from Shai Gilgeous-Alexander lifted the Oklahoma City Thunder past the Detroit Pistons.