The Seattle Mariners have agreed to a one-year, $1.6 million deal with Yoshihisa Hirano.

Hirano has spent the last two seasons with the Arizona Diamondbacks as a valuable reliever.

He appeared in 137 games for Arizona and posted a 3.47 ERA.

Hirano can earn $500,000 in bonuses based on pitching appearances: $50,000 each for 30 and 35, $75,000 apiece for 45 and 50, $100,000 for 55 and $150,000 for 60.

The Houston Astros officially introduced Dusty Baker as their new manager on Thursday.

The Astros fired A.J. Hinch earlier this month in the wake of a sign-stealing scam that was investigated by Major League Baseball.

Baker, 70, has been chasing a World Series title for decades.

"I was happy, but I wasn't satisfied, where I was and what I was doing because something's missing,'' he said. "And I think the Lord gave me the best chance to accomplish what I need as a person, as a father, and as a man.''

Baker has 22 years of managing experience.

"This is my last hurrah," he said. "And I thought my last hurrah was in Washington, actually, because I gave all my stuff away. I went to find my shoes, went up to the attic and I found the empty bag. ... So this is a new beginning for me."

The Chicago Cubs and Colorado Rockies have discussed the possibility of a blockbuster trade.

According to a report, they have discussed a one-for-one deal that would send Kris Bryant to the Rockies in exchange for Nolan Arenado.

Colorado would likely pay some of the $234 million that remains on Arenado's contract.

“This is something I heard very recently -- that, yes, Arenado would love to play for the Cubs," ESPN's Jesse Rogers said during a radio appearance. "I’ll go one step further. That they’ve even discussed a one-for-one deal, Kris Bryant for Nolan Arenado, where the Rockies pick up a good portion of Arenado’s salary over the length of the contract. I’m talking $7 or $8 million per year.

"That’s how much they need to get rid of Arenado," Rogers added, "and he wants out."

The Boston Red Sox and Los Angeles Dodgers are deep in talks centered around a Mookie Betts trade, according to sources.

The clubs have discussed multiple scenarios, including some with and some without David Price.

Betts, 27, will be eligible for free agency after the 2020 season.

The Red Sox understand the benefit of dealing the outfielder before the season, which would remove distractions.

The San Francisco Giants have brought back Pablo Sandoval on a Minor League deal.

The deal is reportedly worth $2 million with $750,000 in incentives.

Sandoval is rehabbing from Tommy John surgery, but could prove a valuable reverse infielder for the Giants.

The Cincinnati Reds are expected to hold off trading Nick Senzel, according to Dick Williams.

He is expected to be on Cincinnati's Opening Day roster.

"Yeah, I do," Williams said when asked if he thinks Senzel will be on the Opening Day roster. "I like what he brings to our club. He's one of our own. He's an impact, young offensive player. They don't come along very often. The flexibility he brings to the club, attitude he brings. At this point, we see him as very much a part of a winning, championship team here."

Senzel was rumored in trade talks for most of the winter.

Kris Bryant lost his grievance against the Chicago Cubs and won't become a free agent until after the 2021 season, according to a source.

Bryant was seeking an extra year of service time, which would have allowed him to hit free agency earlier.

With two seasons of team control left, the Cubs can seek more in a possible trade involving Bryant.

The Kansas City Royals have brought back Greg Holland on a Minor League deal.

Holland will make $1.25 million on the one-year deal if he's added to the 40-man roster. He also has the chance to earn more through performance bonuses.

The reliever was 1-2 with a 4.54 ERA last year in 40 relief appearances with the Arizona Diamondbacks.

The Milwaukee Brewers have agreed to terms on a contract with David Phelps.

The deal is for one year with a club option for 2021.

The 33-year-old reliever finished last season with the Chicago Cubs. Between the Cubs and Toronto Blue Jays in 2019, he made 41 appearances and posted a 3.41 ERA.

The Boston Red Sox seem more serious than ever about trading Mookie Betts, according to a report.

Rival clubs are starting to think a trade may truly happen.

Trade talks have picked up as of late. The Los Angeles Dodgers and San Diego Padres have most recently been linked to Betts.