Manny Machado’s one-game suspension was upheld and he will served it Tuesday night against the Giants.

Machado appealed the suspension he received for his actions during his ejection June 15 in Colorado. He was also fined by Major League Baseball “for aggressively arguing and making contact with umpire Bill Welke.”

"Those things are rarely overturned, that's kind of the precedent there," said Padres manager Andy Green. "We believed in Manny's case. Manny had the opportunity to plead his case. It didn't help our cause. We're going to miss him for a night, but he'll be right back with us."

Machado took issue with Welke over a borderline 2-2 fastball from Rockies right-hander German Marquez in the fifth inning. He was ejected, and the argument escalated from there as he threw his bat and shouted from the top step of the dugout.

But what earned Machado his suspension was at the start of the conflict, when he turned toward Welke and threw his helmet. It’s unclear on the video if there was any contact, but Welke immediately pointed to his right arm.

"He pointed, but I was way too into the zone of letting him hear what I had to say on what I thought about the call," Machado said after the game. "I didn't think I touched him."

Renfroe in center

In the eighth inning of a blowout Monday night, the Padres moved Hunter Renfroe to center field for the first time in his big league career. Renfroe made an impressive grab, chasing down a fly ball to the warning track in the left-center-field gap.

A day later, Renfroe was back in center -- as the starter.

“We’d been talking about it for a while, and the eye test didn’t look bad yesterday,” Green said. “It was more than passable. … Nobody’s saying he’s Manny Margot out in center field. But we’ll take a look at this.”

Internally, the Padres may have been discussing the possibility. But Renfroe hadn’t taken any reps in center field. Margot and Wil Myers have split time there this season.

“I played there a lot in college and throughout Minor Leagues,” Renfroe said. “It's nothing new to me. I enjoy center field. You get great reads out there, being dead center of home plate.”

The benefits of Renfroe as a center fielder are obvious. He’s one of the game’s top sluggers with 24 homers and a .905 OPS. If he could post those numbers at one of the game’s premier defensive positions, his value would shoot through the roof.

That said, the Padres have no long-term plans for Renfroe as a center fielder, Green said. For now, it’s merely an experiment, so they can get Renfroe, Franmil Reyes and Josh Naylor into the lineup at the same time.

Tatis’ brother signs with White Sox

Four years ago, Fernando Tatis Jr. put pen to paper on his first pro contract. His younger brother Elijah is on the same path. When the international signing period opened on Tuesday, Elijah Tatis signed with the White Sox, just like his brother had.

Tatis Jr., of course, was dealt to the Padres a year later in the trade that sent James Shields to Chicago -- a coup for Padres general manager A.J. Preller.

“Who knows, maybe he’s got a trade for him, too,” Tatis Jr. quipped. “I’ll talk to A.J.”

Asked for a scouting report on his younger brother, Tatis Jr. was predictably glowing.

“He has the same things I do when I was his age,” he said. “He's going to be very interesting, too.”

Jankowski begins rehab

Outfielder Travis Jankowski began a rehab assignment with Triple-A El Paso on Tuesday night. One of the game’s elite speed-and-defensive threats, Jankowski sustained a broken left wrist in Spring Training and hasn’t played this season.

Given his extended absence, Jankowski won’t be ready until late July at the earliest. The Padres have a handful of outfielders they might dangle as trade bait, so Jankowski’s return could align nicely with the Trade Deadline.

Jankowski batted .259/.332/.346 in 117 games last season, while swiping 24 bases and shining defensively at all three outfield spots.