The Red Sox made a pair of additions on Thursday, signing left-hander Helcris Olivarez to a minor league deal and right-hander Luis Cabrera as an international free agent, according to the club’s transaction log.

Olivarez has an intriguing history and some potential upside. The 23-year-old was once regarded as a top pitching prospect in the Colorado Rockies organization whose fastball previously touched 100 mph. He has spent most of the past two seasons injured but reportedly sat in the mid-90s when he recently took the mound during an instructional league game, according to Red Sox Stats on Twitter.

Originally signed by the Rockies in 2016 as an international free agent, Olivarez pitched two seasons in the Dominican Summer League before arriving in the U.S. in 2019. That season he made 11 starts in rookie ball, posting a 4.82 ERA with 61 strikeouts in 46.2 innings, and in 2020 he made a strong impression at the organization’s alternate training site amid the COVID-19 pandemic.

Olivarez was subsequently added to Colorado’s 40-man roster to protect him from the Rule 5 Draft and heading into 2021 he was ranked as the Rockies’ No. 11 prospect by Baseball America. But his performance fell off drastically afterwards, posting a 6.05 ERA with an eye-popping 68 walks in 99.2 innings.

He was outrighted off the 40-man roster after clearing waivers following the season, and in 2022 he was limited to just two innings in rookie ball before undergoing shoulder surgery. He missed the rest of that season and did not pitch in 2023 either, but now he’ll have a chance to resume his career with the Red Sox, though whether he’ll continue as a starter or shift to the bullpen remains to be seen.