The New Zealander took a superb double victory for Rodin Carlin including a great drive from the back row to win Race 2 in the rain.
Sharp said to insideF2: “That was the craziest race I’ve ever done, starting from the back row of the grid I never expected to be here after the race.
“Talking to my engineer before the race our goal was to just keep it clean and we knew we had good speed so I was just aiming to keep it clean and make up as many (places) as I could but I never thought I’d be standing here so I’m absolutely over the moon with the result.”
Alpine Junior Aiden Neate finished in second place for Fortec Motorsports after starting in P15.
The British driver said the rain in Race 2 allowed for more chances to storm through the field.
“You see the wet and you opportunities as well so really happy to make the places up, P15 to second is quite nice.
“The pace was good, we made some really good overtakes so you can’t really ask for much more at the moment.”
Rodin Carlin’s Noah Lisle dominated Race 3 taking the win by 13 seconds ahead of his team mate Dion Gowda in the rain.
The Australian said: “(It was) a really really tricky race with the weather especially at the start, I didn’t really know where to brake into Turn 1.
“It’s always going to be difficult when you’ve got different cars out and rain drying so a difficult race but we managed it well between me and the team so really really happy.”
Lisle’s coach Callan O’Keeffe explained that hard work is critical to success and not allowing complacency to creep in.
“Just hard work. You win and it’s great but every championship you race in now the margins are so small you can never get complacent.
“We’ll enjoy this one because it’s Noah’s first win and it was in dominant fashion but straightaway tomorrow we’re back to work, we’re off to Spain on Wednesday for testing in Motorland we’ve got the official Spanish F4 test there.”