Joel Embiid says he must "play better" despite an excellent solo performance in the Philadelphia 76ers' 114-105 loss to the San Antonio Spurs at home on Saturday.

The 28-year-old posted 40 points and 13 rebounds in a superb individual performance but his efforts were in vain as the Sixers slipped to a third successive loss to start the campaign.

With a talented squad expected pre-season to be among the league's strongest this term, a 0-3 return so far has been a shock to the system for the 76ers.

Embiid, who has been struggling with a foot issue following a plantar fasciitis injury sustained before the team's lead-in training camp, says he is still heading back to full fitness, but stresses he can do more in spite of that.

"Obviously, I'm not playing at my best," he stated. "We're not winning. Tonight was a start, but we got to find ways to win, so I need to play better.

"I'm still trying to work my way back. Coming into training camp, I hadn't done anything in like two months.

"So, it really slowed me down, but [I'm] still trying to work my way back. Hopefully, everything goes back to normal."

The Sixers will hope to dodge an 0-4 record when they welcome the Indiana Pacers to face them on Monday.