Charles Harris has two sacks in 18 NFL games and he is fully aware.

"I think he gets frustrated sometimes," Dolphins defensive coordinator Matt Burke said Thursday. "He hasn’t had as many of the positive results — end results — statistically. He’s had a lot of pressures for us and affected plays but he just hasn’t had that putting up sack numbers, which I think he gets frustrated by sometimes."

Harris was selected by the Dolphins in the first round of the 2017 NFL Draft, but he hasn’t made a dramatic impact yet.

"He’s an explosive player," Burke said. "We just keep telling him, ‘Put your hand down, get off and good things will happen.’ I thought he was better last week – this past week – than the first week, in terms of doing that stuff."

Harris sacked Sam Darnold last Sunday, but it was negated by a penalty on defensive end Andre Branch.

"Honestly, I think (Harris is) a little bit like Raekwon (McMillan), just in terms of he’s getting better and better every day," Burke said. "He had the sack negated last week (by a penalty). I don’t want to say I felt bad for him but it would have been good. He had a sack and was kind of getting the momentum going. It was cool to see him get the sack. It stinks that it was taken away by the NZI (neutral zone infraction); but again, all we really want him to do is get off the ball and cause havoc."

In 16 games last season, Harris had 19 tackles and 0 forced fumbles.

In 2 games this season, Harris has 1 tackle, 0 sacks and 0 forced fumbles.

"I think it was the first week — where he was getting some pressure there, which they don’t make the stat sheet," Miami coach Adam Gase said this week. "But I think he’s doing what we’re asking him to do. We’ve just got to keep applying that pressure."

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Harris earned a depth chart spot on Miami’s second team with a strong training camp, highlighted by a two-sack performance in a scrimmage at Hard Rock Stadium.

But this season, third-stringer Andre Branch has out-snapped him, 62-45. In fact, defensive ends with more snaps than him include: Robert Quinn (74), Cam Wake (68), Branch (62) and William Hayes (55).

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"It’s a luxury to have a first-round draft pick that we’re throwing three or four other guys in with," Burke said. "It’s nice that he plays 20 to 30 snaps, or whatever it is, and he can throw his fastballs and give us different looks. I think if he just keeps playing the techniques and playing the style we’re asking him to play, the statistical results will come because he has done some positive things for us. I think we just try to teach him not to get frustrated, stay the course and that stuff will work out."

Burke said what’s most important is that Harris’ arrow trend up and up throughout his second season.

"He’s still a young player for us," Burke said. "He played more obviously than Raekwon did last year but I just hope all of those young players keep on that trend. If we keep saying every week, ‘Okay, he got better. He got better.’ We don’t want him to press. Those results will come. If he keeps playing the techniques and style that we want him to play, those will come."

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