The NL West has a wide range of teams. On one hand, it has the back-to-back World Series Champions, and on the other, it has one of the bottom barrel teams, with playoff contenders and hopefuls in between. The division made some noise this offseason, mainly due to the team that is the focal point of the potential lockout. As we wrap up this series, let’s take a look at each team’s most notable offseason addition in the NL West.
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*Additions Projected to be on the Major League Roster Opening Day
NL West Notable Offseason Additions
Arizona Diamondbacks – Nolan Arenado
A big trade of Ketel Marte was expected by the Arizona Diamondbacks sometime during the offseason but it never materialized. Now they enter 2026 with Marte on the roster and not much improved around him. Arizona did make a trade though and that was acquiring third baseman Nolan Arenado from the St. Louis Cardinals. He’s an eight-time All-Star and won 10 consecutive Gold Glove awards from 2013 to 2022.
His name still holds a lot of value in the league but if you just look at the numbers, he’s declined across the board over the last couple of years. Even his glove hasn’t been up to Arenado standards. The trade being considered just a salary dump for the Cardinals tells it all. That being said, Arenado still plays some decent defense entering his age-35 season and re-joins a NL West division that he’s had success in. Maybe that can get the former MVP candidate to contribute to a Diamondbacks team that clearly thinks he can do just that.
Colorado Rockies – Jose Quintana
As expected, the Colorado Rockies didn’t do much of anything to make them a competitive team. They took a couple of flyers and also signed a few innings-eaters. There wasn’t much to like about what the Rockies did but if you had to point at something, it’s gaining experience in the starting rotation, something that was severely lacking last season. On paper, it looks more serviceable than in years past. Colorado signed three starters in Jose Quintana, Michael Lorenzen and Tomoyuki Sugano.
Of the three, Quintana has been the better pitcher. He’s still been productive despite getting older and now enters his age-38 season. Over the last four seasons, Quintana has finished with an ERA under 4.00. In 100 starts since 2022, his ERA is 3.53. Last season, it was 3.96 in 24 starts. For one year at $6M, he will be tasked with the challenge of pitching at Coors Field. If anything, Quintana will show up and compete every fifth day.
Los Angeles Dodgers – Kyle Tucker
The talk of the winter of course is none other than the Los Angeles Dodgers. They go out yet again and get another star to add to a team full of them. This time it’s Kyle Tucker, who signed a four-year deal worth $240M. The Dodgers were looking for an outfielder all offseason, and it just so happened to be one of the top bats in the league.
Tucker spent seven seasons in Houston before taking a pit stop in Chicago in 2025, where he hit 22 home runs and 73 RBI. He dealt with a hairline fracture in his right hand last season but decided to play through it. That decision also contributed to his struggles at the plate. His overall numbers were not where they were in his last two healthy seasons in 2022 and 2023, but everybody knows what a healthy Tucker can do at the plate. The Dodgers already won back-to-back World Series and now with the addition of the four-time All-Star, they have their eyes on a three-peat.
San Diego Padres – Nick Castellanos
The San Diego Padres welcomed a late notable offseason addition in the form of outfielder Nick Castellanos, who the Philadelphia Phillies released back in early to mid-February. The Phillies had to cover nearly all of his $20M salary, leaving the Padres with only having to give Castellanos the league minimum salary at $780K.
The 13-year veteran’s production at the plate has regressed, having the worst OBP and OPS+ of his career in 2025 while only having an OPS of .694, which is tied for the worst of his career as well. In turn, his home run and RBI numbers dipped. Despite that, Castellanos did hit 17 bombs and knocked in 72 runs, which is an upgrade in that lineup on paper. He will now get a fresh start in San Diego, and with a chip on his shoulder to earn playing time, he could help the Padres’ goal of competing in October.
San Francisco Giants – Harrison Bader
The San Francisco Giants made some noise this offseason but it wasn’t because of any trades or big free-agent signings, it was their managerial hire. They hired Tennessee head coach Tony Vitello, becoming the first college coach to be named an MLB manager without prior pro experience.
On the player side, they did upgrade a position of need, and that was signing outfielder Harrison Bader to a two-year, $20.5M. The Giants’ outfield in 2025 was ranked one of the worst in the league, making this Bader signing much-needed. He is a Gold Glove winner and has been in the conversation almost every season. Since 2018, Bader has tallied 76 outs above average, the best of any outfielder. Aside from his glove, Bader had his best year in 2025, setting career-highs in home runs (17), OBP (.347), OPS (.796) and OPS+ (117). Bader brings his high energy and effort to San Francisco, something that will be happily welcomed by the manager and team.
Main Image: Mark J. Rebilas-Imagn Images
