Scouts have seen it all. I sat with four of them yesterday during Matt Harvey’s dominating performance against the Phillies at Citizens Bank Park, and even they were amazed by the young powerful right-hander.

“I want to know who were the six guys drafted ahead of Harvey?’’ one scout demanded.

“Harvey is a lot like [Justin] Verlander,’’ complimented another, “but there is one big difference now, he can go at a better pace than Verlander.’’

There is no stopping Harvey. He upped his record to 7-1 with the Mets’ 8-0 win over the Phillies as he produced six shutout innings, allowing only two hits and one walk as he struck out six. A rain storm got him out of the game.

This was an outing that had “All-Star Game starter’’ written all over it as Harvey’s ERA dipped to 2.05.

“It would be huge,’’ Harvey said of an All-Star start at Citi Field.

The scouts weren’t the only ones making Verlander comparisons.

“Verlander jumps out because he holds his velocity like Verlander does through the game,’’ Phils third baseman Michael Young explained. “Felix [Hernandez] was like that for a long time. But Verlander jumps out with good velocity and he can throw off-speed pitches for strikes, too. Command is the most important thing. There are a lot of guys in the big leagues that throw hard. [Harvey] can control his pitches and gets ahead in the count. That’s why he’s had his success.’’

That’s some company — Verlander and King Felix.

Harvey left opposing hitters mumbling.

He dropped a curveball on Jimmy Rollins to start the bottom of the first and then struck out Rollins in that at-bat with another curve that fell off the table.

“Jimmy is a good fastball hitter,’’ catcher John Buck told The Post. “Him being a student of the game and a good fastball hitter, I didn’t want him jumping on a fastball, so I talked to Harv and I have as much confidence in that [curve] that he’ll throw it for a strike as I do in his fastball, so I said, ‘Hey, let’s do it.’

“That pitch let all their hitters know that we could do this if we want,’’ Buck added. “Then we went changeup, fastball and curveball again to Jimmy.’’