Yasmani Grandal, Tommy Medica and Rene Rivera at the Fan Cave.

NEW YORK -- For most teams, a trip to Citi Field usually means getting a chance to explore New York City. For Rene Rivera, Yasmani Grandal and Tommy Medica, it gave them a chance to explore the MLB Fan Cave for the first time, too.

Friday morning before their series opener against the Mets, the two catchers and first baseman were given a full tour of the Cave, which included answering some interactive video questions and a game of ping pong.

"They showed us around, talked a little with the interns there, played some ping pong, played some PlayStation," said Grandal. "I think it's great. I think it's awesome just to have a place like that. I don't know of any other sport that has something like it, but they've got something good going on down there."

Rivera impressed on the table tennis platform, beating one of the Fan Cave employees, which apparently had never been done before.

"I'm OK," Rivera said of his game. "I used to play tennis when I was growing up. I've had a racket before in my hands, so I know how to play.

"It's a good place to watch baseball, good place [for] people to start knowing what baseball's about."

Medica was impressed with the 30-screen television station, consisting of live-feeds of home plate and dugouts at every Major League Park. The trip also meant another visit into Manhattan where Medica has fond memories.

"It's unbelievable," Medica said of the city. "I know last time I came here I saw one of the shows. I saw 'Wicked.' One of my favorite things I did, [I] went to an underground comedy club. They had about five or six comedians."

Grandal however, was a little more star struck. Friday marked the first time he had ever been to New York City, and the chaotic atmosphere caught him by surprise.

"I live in Arizona and one of the reasons why I left Miami was because it was super fast-paced," he said. "New York is like two or three times as hectic as Miami. Everything is so cramped up, but that's New York. It has so much history and it's a beautiful city."

He joked he was warned not to take the subway, but might consider it if he's forced to.

"I've got friends who live in New Jersey that are coming out [Saturday] so maybe if we go out and eat, we'll take the subway."

Hahn to get the start Saturday vs. Mets

PIT@SD: Hahn fans Cutch for first career strikeout

NEW YORK -- The Padres finally addressed who would fill the vacant spot in the rotation for Saturday when they called up righty Jesse Hahn from Double-A San Antonio. The rookie joined the club early Friday morning before the start of the three-game series with the Mets.

Hahn made his Major League debut on June 3 in San Diego, but couldn't get through four innings against the Pirates, allowing four runs and two homers. He was sent back to Texas and has quickly built up more stamina there. In his last outing he threw around 90 pitches and will have the same rest schedule when he makes his second start of the year.

"It was good to get up to almost six innings," said Hahn of his last outing. "It's good to build my stamina up, and each start I feel like I get stronger and stronger."

Hahn struggled against Pittsburgh, but found the team's decision to bring him back up more of a confidence boost than having a small amount of Major League experience.

"I think it doesn't change anything," he said. "You still have to go down there and pitch your game. If you throw the ball up, then hitters down there are going to hit it, too. It also builds confidence for me knowing that they gave me another shot to come back up here. Obviously, they saw something they liked."

"Our front office, and our Minor League people felt this is a decision they think was the right one to make with Jesse," said manager Bud Black. "Jesse threw the ball well [in San Antonio] his last outing. The first time in San Diego I think he ran out of gas. Here we are 10 days later. We think he's built up a little more for this game."

His debut was at home in a familiar environment, but none of his Connecticut-based family could see him pitch in person. Saturday at Citi Field will be different.

"I think I got the first one out of the way," said Hahn, who will square off with Mets righty Zack Wheeler. "I'm going to be relaxed. I'm only 45 minutes to an hour away from home, so I have a lot of family here, I have a lot of support."

"It can help and hurt," said Black about having family in attendance. "On balance, it's more helpful. Family, friends, I think can add a lot of ease."

First-rounder Turner signs with Padres

SD@NYM: Booth on Turner signing with the Padres

NEW YORK -- Shortstop Trea Turner, the Padres' No. 13 pick in the 2014 First-Year Player Draft, officially signed with San Diego Friday for $2.9 million according to a tweet from MLB.com reporter Jim Callis.

The North Carolina State product signed above his assigned pick value -- listed at $2,723,300. According to Callis, no first-rounder in the top 22 picks in last year's draft received more than what they were assigned.

The Padres also announced the signings of outfielder Michael Gettys (second round) and right-handed pitcher Zech Lemond (third round).

Turner hit .321 for the Wolfpack this spring, rebounding after a slow start offensively. He hit eight home runs, though he offers more of a line-drive stroke.

Turner has plus-speed and finished with 26 stolen bases in 30 attempts. With continued refinement of his offensive game, he could eventually become a leadoff hitter, according to scouts.

He'll presumably head to the team's Spring Training facility in Arizona for a few days and then transfer to short-season Eugene of the Northwest League. The Emeralds began play on Friday.

Gettys was selected in the second round by the Padres with the 51st overall pick out of Gainesville High School in Gainesville, Ga. Recommended by Padres Area Scout Andrew Salvo, the 18-year-old outfielder hit for a .372 batting average (32-for-86) with seven doubles, nine home runs, 33 runs scored, 14 stolen bases and 40 RBIs.

Lemond was selected 86th overall. The right-handed pitcher from Rice University posted a 4-1 record with a 1.34 ERA (eight earned runs over 53 2/3 innings) and three saves over 15 appearances during his junior season for the Owls in 2014.

Worth noting

• Second baseman Jedd Gyorko is continuing his rehab from plantar fasciitis and, according to manager Bud Black, is still wearing a boot to protect his left foot. He is expected to wear the boot for another several days.

‬‬‬ • Pitcher Robbie Erlin underwent a second MRI Friday afternoon for his left elbow in San Diego, but manager Bud Black hadn't heard any word of the result before Friday's game.