D-backs Notes: Lawlar, Burnes, Bullpen, Santana

The Diamondbacks’ acquisition of future Hall of Famer Nolan Arenado (alongside their decision not to trade Ketel Marte) pushed longtime top prospect Jordan Lawlar out of the club’s infield mix, at least on paper. That’s led to some questions about his role moving forward, but manager Torey Lovullo revealed to reporters (including Alex Weiner of AZ Sports) yesterday where the team hopes to play Lawlar going forward: center field. That would displace incumbent center fielder Alek Thomas, who Lovullo suggested would move around the outfield amid injuries to Lourdes Gurriel Jr. and Corbin Carroll.

Of course, that plan to play Lawlar in center field is predicated on him proving himself capable of handling the position this spring. He played three games in center during the Dominican Winter League this offseason, but otherwise has spent his entire professional career on the dirt. His 98th percentile sprint speed in 2025 certainly suggests he has the wheels to handle the position, offering plenty of reason for optimism, but that lack of experience calls into question how effectively he’ll be able to pick up the position on the fly. It wouldn’t be the first time a team converted an infield prospect to center over the course of one Spring Training, as the division rival Padres managed to do just that with Jackson Merrill two years ago. Merrill turned in one of the best defensive seasons in the entire sport as a rookie, and should offer some optimism about Lawlar’s ability to follow suit.

Perhaps the biggest question for Lawlar isn’t whether he’s physically capable of handling center field, but whether he’s capable of staying on the field long enough to prove it. Between Triple-A and the majors, Lawlar has just 113 games played over the past two seasons due to a variety of injuries. Last season, he missed multiple months with a hamstring strain, while a thumb injury cost him most of 2024. In between those injuries, he’s struggled in brief cameos at the big league level but has managed to continue raking at Triple-A, offering some reason for optimism that he’ll figure things out offensively if given consistent playing time. He’ll now get that playing time at the expense of Thomas, who was once a former top propsect himself but has never quite managed to hit well in the majors with a career 74 wRC+ that peaked at 81 last season. Thomas figures to join Jorge Barrosa, Tim Tawa, and perhaps non-roster invitees like Ildemaro Vargas and Ryan Waldschmidt in mixing and matching in the corners while Carroll and Gurriel are out of commission.

Turning to the pitching staff, ace right-hander Corbin Burnes missed much of his first season in Arizona due to Tommy John surgery but figures to contribute after completing his rehab at some point this year. Burnes himself spoke to reporters (video link via MLB.com) about his timeline for return yesterday, and suggested that he’s expecting to return around the All-Star break. Burnes added that he plans to “try and make it [back] sooner,” though considering he went under the knife in June that could be a tall ask given the procedure’s typical recovery timeline. Adding Burnes back to the rotation would obviously be a massive boost. The former Cy Young award winner had a 2.66 ERA in 11 starts last year (albeit with less impressive peripherals) and placed in the top ten in Cy Young voting in each of the past five seasons prior to his injured 2025 campaign.

Burnes will be working towards a return alongside the team’s two highest leverage relievers, Justin Martinez and A.J. Puk. It appears his projected timeline falls in the middle of the two relief arms, as described by the players themselves in comments made to AZ Sports. Martinez suggested that he’s anticipating a return in August of this year, though he acknowledged it “could be earlier, could be later” depending on how things go from here. He underwent Tommy John surgery in June, like Burnes did. Puk also went under the knife in June, but he underwent a less-invasive internal brace procedure. The southpaw told reporters he hopes to be back by the end of May, but acknowledged that isn’t necessarily realistic. Still, he expressed confidence that he’ll be back on the mound before the second half, which indicates he could be looking at a return to action at some point in June.

Adding Puk and Martinez back to the relief staff could be majorly impactful for the Diamondbacks given their difficulties in finding high leverage relief help this year. The team figures to run back more or less the same group of relievers they finished last year with, as non-roster invitee Jonathan Loaisiga figures to be the most impactful reliever added to the roster during the offseason. Loaisiga has struggled to stay healthy over the years, and while he has a career 3.54 ERA at the big league level he struggled last year with middling results and worrisome peripherals (including a 5.83 FIP) in 30 appearances for the Yankees.

While Burnes, Puk, and Martinez all figure to spend Spring Training rehabbing their injured elbows, first baseman Carlos Santana figures to be preparing for the World Baseball Classic. Santana was one of many players who was unable to secure insurance to play in the World Baseball Classic, but Ken Rosenthal of The Athletic reports that the Diamondbacks decided to give Santana the green light to play in the tournament uninsured. He’ll represent the Dominican Republic alongside teammate Ketel Marte and Geraldo Perdomo, and Hazen indicated that giving Santana the opportunity to bond with his new teammates over the shared experience of representing their home country was a factor in the team’s decision to assume the financial risk of the soon to be 40-year-old veteran getting injured. Santana is slated to make $2MM this year on his one-year deal with Arizona, and Rosenthal notes that, according to club GM Mike Hazen, Santana’s ability to be a clubhouse leader and guide other players on the team was a big part of why he was signed.