DAVIE, Fla. — Miami Dolphins wide receiver Mike Wallace expressed frustration over the offense Tuesday, and Wednesday, coach Joe Philbin and quarterback Ryan Tannehill backed up the team’s top playmaker.

Wallace is Miami’s leader in receptions (32), receiving yards (418) and touchdowns (five).

The Dolphins (4-3) enter Sunday’s game against visiting San Diego (5-3) frustrated by the lack of offense despite being 12th in scoring (24.9 points per game) and sixth in rushing yards per game (138.0).

The problem is the Dolphins are 25th in passing yards per game at 217.

Philbin, as is his policy, wasn’t specific on whether he talked to Wallace about his frustration.

“Any conversation I would have would be private,” Philbin said, “but I think he echoed a lot of things we said. We want to be better. We want to be more explosive. We want to score more points. We’re here to build something special offensively. We are not there yet. We have a lot of work to do.”

Tannehill seemed unmoved by Wallace’s frustration.

“We’re frustrated at this point,” he said. “I think, not just Mike, not just me, not just the offensive line, the whole offense is frustrated with the way that we played.”

The offense had 326 yards in last week’s 27-13 victory over Jacksonville. But the defense accounted for 14 points by returning interceptions for touchdowns.

“We didn’t do nothing,” Wallace said of the offense. “We’ve got to get better.”

The Dolphins’ offense has got off to a notoriously slow starts this season. They are 26th in the NFL at first-quarter points per game (2.9).

The Dolphins trailed at halftime in four of their seven games, another source of frustration for Wallace.

NOTES: TE Dion Sims (toe) missed practice the last two days. … LG Dallas Thomas might start if Daryn Colledge (migraine/sinus) is unable to do so. … TE Charles Clay (right knee) was limited in Wednesday’s practice. It’s starting to appear as though Clay, who has been slowed by this ailment since training camp, might never get to 100 percent health this season. … RG Mike Pouncey, who missed the Jacksonville game with soreness in his surgically-repaired left hip, was limited in Wednesday’s practice. … S Jimmy Wilson (hamstring) and MLB Koa Misi (ankle) also missed Wednesday’s practice.