Cionel Pérez Bio
Cionel Félix Pérez Viera is a Cuban professional baseball pitcher who is a free agent. Pérez signed with the Houston Astros as an international free agent in 2016 and made his Major League Baseball debut in 2018. Over his career he has appeared for the Houston Astros, Cincinnati Reds and Baltimore Orioles, compiling a record that established him as a reliable major league bullpen option.
Early Life and Background
Cionel Félix Pérez Viera was born on April 21, 1996, in Cuba. He played two seasons for Matanzas in the Cuban National Series before pursuing a career in Major League Baseball, developing as a right-handed pitcher in Cuba’s professional circuit prior to signing with the Astros.
Pérez’s early baseball years in Cuba provided the foundation for his professional approach. Specific details on his family and formal education are not publicly detailed in the verified sources available for this profile.
Path to Baseball
Pérez entered the international market when he signed with the Houston Astros organization in 2016. After an initial contract agreement was voided due to a physical issue, he reached a new agreement with Houston in December 2016 and reported to the Astros’ minor-league system the following spring.
He made his professional debut in the United States with the Single-A Quad Cities River Bandits in 2017 and advanced through the Astros’ ladder that season, seeing time with High-A Buies Creek and Double-A Corpus Christi. The organization added him to the 40-man roster after the 2017 season to protect him from the Rule 5 draft, paving the way for his major-league debut in 2018.
Cionel Pérez Career
Early Career (2016–2018)
Pérez’s formal professional career began after he signed with the Houston Astros in late 2016. In 2017 he split time among three minor-league levels, combining for a 6–4 record and a 4.13 ERA with a 1.29 WHIP across Single-A, High-A and Double-A assignments. The rapid promotions in his first full season underscored Houston’s interest in his development as a starting-rotation candidate and bullpen depth piece.
He made his Major League Baseball debut for the Houston Astros on July 11, 2018. His introduction to the majors came after his protection on the 40-man roster and a season of progression through the minor-league system, marking the transition from prospect to big-league pitcher.
Houston Astros Breakthrough (2018–2020)
Pérez’s early big-league appearances with the Houston Astros were limited but formative. Across stints with the club in 2018 and 2019 he worked in both developmental and relief roles, appearing in a small number of major-league games as the organization managed his innings and assignment level. In 2019 he spent time at multiple minor-league levels, including the Triple-A Round Rock Express, compiling innings that contributed to his growth and readiness for extended major-league work.
In the shortened 2020 season Pérez made several appearances for Houston out of the bullpen. He recorded a 2.84 ERA over limited innings that year, showing flashes of swingman value as he adjusted to relief duties in the big leagues. Those outings helped set up later opportunities with other organizations seeking left- and right-handed bullpen depth.
Cincinnati Reds Season (2021)
On January 23, 2021, the Houston Astros traded Pérez to the Cincinnati Reds in exchange for Luke Berryhill. Pérez made 25 appearances for Cincinnati in 2021, working 24 innings and recording 25 strikeouts while compiling a 1–2 record and a 6.38 ERA. The season represented a sustained run of big-league innings but also the challenges of maintaining consistent results across a full MLB campaign.
Baltimore Orioles Era (2022–2025)
The Baltimore Orioles claimed Pérez off waivers on November 24, 2021, and he became an important part of the Orioles’ bullpen in 2022. That season he emerged as a high-leverage reliever, appearing in 66 games and posting a 7–1 record with a 1.40 ERA while striking out 55 batters in 57 2/3 innings. The 2022 campaign represented a career high point in effectiveness and workload at the major-league level.
Over the next two seasons Pérez remained in Baltimore’s relief mix. In 2023 he appeared in 65 games and finished the year with a 4–2 record and a 3.54 ERA across 53 1/3 innings. In 2024 he worked 62 relief appearances but saw his ERA rise to 4.53 as he navigated a heavier workload and opposing hitters’ adjustments. In 2025 Pérez struggled to a higher earned run average in limited action, leading to a designation for assignment in May and an outright assignment to Triple-A Norfolk later that month. He elected free agency following the 2025 season, making him available to other organizations.
Driving Style and Strengths
Pérez has functioned primarily as a bullpen pitcher at the major-league level. His 2022 season with the Orioles showcased his ability to handle high-leverage innings and miss bats, producing strong strikeout totals and limiting runs across an extended relief workload. His role has generally emphasized situational appearances and short-relief effectiveness rather than extended starts.
Notable Events and Milestones
Key milestones in Pérez’s career include his addition to the Houston Astros’ 40-man roster after the 2017 season, his major-league debut on July 11, 2018, and his first career save on June 12, 2022, in a Baltimore Orioles win over the Kansas City Royals. The standout 2022 season remains his most notable stretch of sustained success at the major-league level.
Cionel Pérez Career Wins
Pérez’s career includes a mix of minor-league starting work and major-league relief results. Across his time in MLB through the end of the 2025 season he compiled winning decisions and relief appearances that contributed to a positive overall win–loss mark for his major-league career as reported in verified summaries.
Major League Highlights
His best major-league season came in 2022 with the Baltimore Orioles, when he posted a 7–1 record with a 1.40 ERA in 66 relief appearances. That season stands as the clearest example of Pérez’s capability to contribute in high-leverage situations and to sustain effectiveness across a full season of relief work at the MLB level.
Other Wins & Perfromances
At the minor-league level Pérez compiled respectable numbers during his 2017 campaign with Quad Cities, Buies Creek and Corpus Christi, going 6–4 with a 4.13 ERA and a 1.29 WHIP. Those performances led to his protection on the Astros’ 40-man roster and eventual promotion to the major leagues.
Cionel Pérez Family
Family Background and Racing Lineage
Pérez’s public biography confirms Cuban origin and early professional play in Cuba prior to his move into affiliated baseball in the United States. No further verified public details about extended family or a multi-generational baseball lineage are available in the verified sources used for this profile.
Personal Life
Public records used for this profile list Cionel Félix Pérez Viera as married. Additional personal details such as spouse name, children or residence are not included here because they are not verified at the required sourcing threshold for this page.
2025 Season Performance
The 2025 season marked a difficult stretch for Pérez with the Baltimore Orioles. He struggled through 19 appearances with an 8.31 ERA and 21 strikeouts across 21 2/3 innings before being designated for assignment in May. After clearing waivers he was sent outright to Triple-A Norfolk, where he appeared 21 times and posted a 6.85 ERA across 22 1/3 innings. Pérez elected free agency on September 29, 2025, concluding his tenure in the Orioles organization and entering the free-agent market for the subsequent offseason.