Prevention beats cure. So caution was a buzzword at Nets practice Sunday.

Paul Pierce was held out because of a jammed big toe, a condition suffered in the last preseason game at Miami on Friday but not believed serious. Andrei Kirilenko’s back spasms, though, continue to be a concern. Kirilenko did only treadmill work.

“Just jammed it the other day in the game, just taking a couple days of rest,” Pierce said. “Going into the season, you want to make sure you’re 100 percent, take extra precaution and see how it feels tomorrow.”

Coach Jason Kidd was not flustered about Pierce.

“He deserves a day off. He got his work in. He stubbed his toe in the Miami game so there was no need for him to go today,” Kidd said.

Now Kirilenko …

“He was out. He got some treadmill work in, but he didn’t do anything on the floor. It’s a day-by-day thing with him,” Kidd said.

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Kidd also claimed there has been no decision on who will fill in as head coach when he serves his two-game, NBA-imposed suspension for a DUI conviction beginning with Wednesday’s opener.

“We haven’t made a decision who’s going to coach,” Kidd said.