OAKLAND — With his agent Scott Boras watching, the newest member of the A’s organization, Max Muncy, suited up in green and gold for the first time to take some batting practice and field ground balls in front of the big league team.

Matt Chapman, Tony Kemp and some of his other teammates passed along some quick words of advice on Muncy’s first day as a professional baseball player.

“Stay short and sweet to the ball, it’s higher velocity now,” Muncy said.

Muncy, 18, officially inked a deal with the A’s worth $2.85 million, $109,700 over Oakland’s $2.74 slot value for their first-round pick, on Monday afternoon. The shortstop out of Thousand Oaks High School in Southern California decided to forgo his commitment to play baseball for the Arkansas Razorbacks and will head straight to Arizona for instructs.

After making their selection on Day 1 of the 2021 MLB draft, A’s scouting director Eric Kubota touted Muncy’s power, noting he was hitting home runs to all fields in his workout with

“It’s surreal, especially seeing these guys in person,” Muncy said. “They’re a lot bigger than I thought they were, compared to high school guys. But the guys have been great, great experience. Just starting to sink it. It doesn’t really make sense when you first get drafted, but once you get to the stadium and start putting the jersey on it becomes real.”

Muncy will be the second Max Muncy to cross the A’s organization. The A’s drafted current Los Angeles Dodgers infielder Max Muncy out of Baylor in the 2012 draft’s fifth round, and he stuck with the Dodgers after his release from the A’s in 2017.

Manager Bob Melvin, a second overall pick by the Detroit Tigers in 1981, recalled his first workout with a big league organization at the Oakland Coliseum. In his 11 seasons managing the A’s, he’s seen plenty of first-round picks — from Matt Olson to Matt Chapman — have their first workouts in Oakland, too.

“This is an exciting day when you get the first-round pick here and get some eyes on him and let him go out there and take some batting practice,” Melvin said. “It goes a way back with me and the guys we’ve had here. Now some of them are All-Stars playing here. You often think about when a guy like Max will be at the big league level for us. You certainly expect your first-round picks to be in the big league level at some point. High school kid takes a little longer, but it should be an exciting day.”

The A’s are hoping this Muncy sticks. But the comparisons to the other Muncy — who also shares an August 25th birthday 12 years apart — haven’t slowed. Los Angeles’ Muncy fielded questions about the younger Muncy at the All-Star game.

“I feel worse for him because he’s at the All-Star game getting questions about me,” the A’s 2021 first round pick said.

The A’s have selected high school position players in consecutive drafts; Muncy follows catcher Tyler Soderstrom from Turlock High School, who the A’s took with their first-round pick in the 2020 MLB Draft. Oakland took shortstop Logan Davidson out of Clemson in 2019 and current Arizona Cardinals quarterback Kyler Murray ninth overall out of Oklahoma in the 2018 draft.

“You think you’re going to make it in middle school then have doubts when it starts to get more real,” Muncy said. “But to be able to achieve my childhood dream with these guys is just unreal.”