New York Mets starting pitcher Kodai Senga had a platelet-rich plasma injection in his ailing right shoulder and won't throw for at least three weeks, all but sealing that he won't take the mound as the team's Opening Day starter.

Manager Carlos Mendoza told reporters Sunday that Senga had returned to spring training camp in Port St. Lucie, Florida, after traveling to New York for diagnosis and treatment.

Shohei Ohtani saw six live pitches during a batting practice session on Wednesday, just his second of Spring Training.

Los Angeles Dodgers manager Dave Roberts says Ohtani wants to take 50 spring training at-bats to feel ready for the regular season.

The five at-bats he has taken through two live-BP sessions essentially count, Roberts said, as do indoor sessions off a Dodgers pitching machine that can mimic pitch characteristics.

"I feel like I have more than enough time to get 50 at-bats," Ohtani said.

Ohtani, 29, isn't expected to play in any of the Dodgers' Cactus League games this week but could play shortly thereafter.

New York Mets right-hander Kodai Senga experienced arm fatigue after throwing a side session during spring training and is undergoing tests.

"We'll see [about an MRI]," Carlos Mendoza said. "We've got to get with the trainers. ... I've got to get more information. But he got on the mound yesterday and today he came in and just overall arm fatigue."

The Mets are hoping Senga will help anchor their starting rotation.

Aaron Judge's big toe is more than a footnote for the New York Yankees.

Judge missed 42 games after tearing a ligament in his right big toe when he crashed into the right-field fence at Dodger Stadium last June 3, a big reason the Yankees fell from postseason contention.

"It's going to be I think a constant maintenance I think the rest of my career," Judge said Tuesday. "Anything with injuries like that, you just got to stay on top of it so it doesn't flare up again."

Shohei Ohtani did not participate in live batting practice Sunday, and his Los Angeles Dodgers spring training debut is on hold.

Dodgers manager Dave Roberts said Ohtani, who is coming back from elbow surgery, will not play in Thursday's opener against the San Diego Padres. 

Before big league camp has even officially started, Rangers third baseman Josh Jung’s bad Spring Training luck has already begun.

Jung experienced discomfort while fielding ground balls Friday morning after arriving in Surprise, Ariz., earlier that day. He got an MRI, showing a low-grade calf strain, according to manager Bruce Bochy.

Walking into the clubhouse in Surprise on Saturday, Jung just shook his head, saying “Here we go.”

Astros ace Justin Verlander is dealing with a shoulder issue that has delayed his spring training timeline and could jeopardize his status for Opening Day.

Verlander told reporters Wednesday that he is "a couple of weeks behind" his traditional schedule after experiencing a "little hiccup" in his pitching shoulder.

"I'm a little bit behind schedule right now," Verlander said.

San Diego Padres star Manny Machado, who underwent offseason surgery to alleviate tennis elbow in his right arm, has been throwing for roughly six weeks and has spent the last week or so ramping up the intensity on the field.

Swinging a bat and fielding ground balls isn't a problem, Machado said. The biggest question, which hovers over his availability for the Padres' season-opening two-game series from South Korea on March 20, is "what my arm can tolerate throwing wise."

Colorado Rockies right-hander Daniel Bard, who is expected to compete for the closer role, will undergo surgery for a torn meniscus in his left knee and will miss spring training, he told The Denver Post.

Bard, 38, suffered the injury during a throwing session "about 10 days ago," he told The Post. The team said there is no timetable for his return, but he said he expects the recovery from surgery to take five to seven weeks.

Los Angeles Dodgers designated hitter Shohei Ohtani took on-field batting practice for the first time with his new team Monday at Glendale, Arizona, and put on another of his patented shows.

According to multiple reports, Ohtani swung at 21 pitches and hit 10 of them over the fence in his first outside hitting work of spring training.