Obi Toppin a go for Knicks opener with Quentin Grimes still not ready

Quentin Grimes didn’t practice Tuesday due to nagging soreness in his left foot, knocking him out of the Knicks’ season opener Wednesday in Memphis.

Grimes, who officially was listed as “out” on the NBA’s daily injury report, appeared in one preseason game, playing 15 minutes in Friday’s win over the Wizards.

Obi Toppin also had been limited in practice earlier this week with an ankle issue from the game against Washington, but he was a full participant in Tuesday’s practice in Tarrytown and will be available.

“I think Obi, barring something unforeseen, is a go. Because he did everything and he felt fine,” Tom Thibodeau said a few hours before the determination on Grimes was revealed. “I’m just waiting to be updated on Quentin. … There’s soreness, so we’ll see where he is. He’ll visit with the medical people after [practice] and we’ll go from there.”

Thibodeau said at the outset of camp that he expected Evan Fournier to open the season as the starting shooting guard, but Grimes said last week that he’d hoped to compete for the spot before the foot injury set him back and limited him throughout the preseason.

Grimes’ absence could open rotation minutes for Cam Reddish or Miles McBride in the opener, although Thibodeau also could utilize nine players rather than the 10 he usually prefers.

“We could, depending on what’s going on in the game. We have different guys on the bench that have different strengths,” Thibodeau said. “So depending on the matchup, what’s going on will probably determine who gets in there.”

The opener will pit the NBA’s top two offensive rebounders from last season against each other, centers Steven Adams (4.6 offensive boards per game) and Mitchell Robinson (4.1).

“I think we all see the growth in Mitch and where he is,” Thibodeau said. “Steven Adams has done it for a long time, big body, and he knows how to carve out space. Terrific, like, multiple effort, back-tip guy, also. So we know we gotta keep a body on him.”