Five players from the National League West are currently undervalued in mid-to-late rounds of fantasy baseball drafts, offering significant potential for managers looking to bolster their rosters.

Michael Conforto, now with the Los Angeles Dodgers, presents a compelling case. After a strong showing with the San Francisco Giants, his metrics indicate he could thrive in a more favorable home environment. Meanwhile, Nick Pivetta, recently signed by the San Diego Padres, has solid strikeout rates and could see his performance improve with a shift to Petco Park.

Justin Martinez is the new closer for the Arizona Diamondbacks and has shown promising stats, including a high strikeout rate, suggesting he is a viable option for saves. Jung Hoo Lee is another name to watch; despite an injury-shortened debut, his contact metrics point to a potential breakout at a low ADP. Lastly, Michael Toglia of the Colorado Rockies has displayed elite barrel rates and power potential, making him a valuable late-round pick.

Corbin Burnes may not make his debut as the Opening Day starter for the Arizona Diamondbacks, potentially pushing his first appearance until the team's road game against the New York Yankees. After his recent outing, Burnes confirmed he will have another spring training outing, which may set him up for a start on April 1. This could mean he would have an extra day of rest, but it's unclear how this will impact his regular-season schedule. Manager Torey Lovullo hinted at adjustments in the pitching rotation to accommodate Burnes' schedule.

The Diamondbacks also announced a five-year contract extension for right-hander Justin Martinez, valued at $18 million, with conditional options based on his injury history. With the team expected to finalize their roster soon, key decisions loom regarding the fifth starter and bullpen positions, with names like Brandon Pfaadt and Ryne Nelson in contention.

The Arizona Diamondbacks are reportedly close to finalizing a five-year, $18 million contract extension for young reliever Justin Martinez, pending a physical. This deal is expected to cover all of Martinez's arbitration-eligible years and includes club options for the first two years of his potential free agency, valued at $7 million in 2030 and $9 million in 2031. At just 23 years old, Martinez had an impressive first full season in the majors in 2024, posting a 2.48 ERA with 91 strikeouts over 72⅔ innings.

Boasting one of the fastest fastballs in the league that averages 100.3 mph, Martinez's pitching arsenal includes a splitter and slider with whiff rates of 54% and 45.1%, respectively. Despite a previous elbow surgery in 2021, he is a strong candidate for the Diamondbacks' closer role this season, competing against left-hander A.J. Puk.

Spring Training has kicked off for the Arizona Diamondbacks at Salt River Fields, where promising right-hander Justin Martinez is looking to build on a strong 2024 season. At just 23 years old, Martinez achieved a standout performance with a 2.48 ERA and 2.59 FIP over 72.2 innings, primarily in high-leverage situations, even stepping into the closer role briefly. He successfully converted 8 of 10 save opportunities, showcasing his potential as a reliable reliever.

Martinez expressed that last season provided invaluable experience, preparing him for the rigors of pitching under pressure. With a focus on hard work and continuous improvement, he remains unperturbed by the competition for the closer role with other candidates like A.J. Puk and Kevin Ginkel. His commitment to readiness and physical strength has him excited about the potential for success this season, regardless of his specific role in the bullpen.

As the MLB off-season unfolds, projections from ZiPS and Steamer are being analyzed at Arizona Diamondbacks On SI, focusing on the performance expectations for each member of the team. The site aims to provide a comprehensive overview of players by averaging projections and assessing individual contributions based on rate statistics and playing time.

The evaluation extends beyond the 26-man roster typically utilized on Opening Day, encompassing the entire 40-man roster and including promising minor-leaguers and prospects that may impact the Diamondbacks' 162-game season.