History of Mason Miller in Timeline

By Popular Timelines Editorial Team · Updated: July 14, 2026

Mason Miller is a professional baseball pitcher known for his exceptional velocity and rise through the ranks of Major League Baseball. Drafted by the Oakland Athletics in 2021, Miller overcame a diagnosis of Type 1 diabetes during his college career to reach the major leagues. He is widely recognized for his high-octane fastball, which consistently reaches triple-digit speeds, establishing him as one of the most electric relief pitchers in the game. Despite early injury concerns that delayed his development, he has quickly cemented himself as a cornerstone of the Athletics' bullpen. His rapid ascension from a small-college standout to an elite MLB closer serves as a notable example of perseverance and raw physical talent in modern professional baseball.

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Full Timeline

1961: MLB expansion era milestone

Since 1961, which marked the beginning of the MLB expansion era, league records have been tracked to provide context for player achievements such as Mason Miller's eighth-longest scoreless streak by a relief pitcher.

August 24, 1998: Birth of Mason James Miller

On August 24, 1998, Mason James Miller, who would later become a professional baseball pitcher known as 'the Reaper', was born.

Others born on this day/year

2006: Previous Padres scoreless record

In 2006, Cla Meredith set a San Diego Padres team record by pitching 33 2/3 consecutive scoreless innings, a mark that stood for two decades until it was surpassed by Mason Miller in 2026.

2021: Selection in MLB Draft and Professional Debut

In 2021, Mason Miller was selected by the Oakland Athletics in the third round of the Major League Baseball draft and subsequently made his professional debut with the Arizona Complex League Athletics.

2022: Minor League Development and Arizona Fall League Participation

Throughout 2022, Miller pitched in six games across multiple teams including the ACL Athletics, Lansing Lugnuts, and Las Vegas Aviators, and he capped off the season by participating in the Arizona Fall League.

April 18, 2023: Promotion to Major League Baseball

On April 18, 2023, following a dominant performance for the Triple-A Las Vegas team where he recorded 11 strikeouts across 5 perfect innings, Mason Miller was officially promoted to the major leagues by the Athletics.

April 19, 2023: Mason Miller's Major League Debut

On April 19, 2023, Mason Miller made his professional major league debut in a game against the Chicago Cubs. During his 4.33 innings pitched, he allowed two runs on four hits, walked one batter, and recorded five strikeouts, while also distinguishing himself as the 10th starting pitcher since the introduction of Statcast to throw 15 pitches exceeding 100 mph.

2023: MLB Debut

In 2023, Mason Miller officially made his Major League Baseball debut, marking the beginning of his professional career at the highest level.

April 2024: MLB Reliever of the Month

During April 2024, Mason Miller was honored as the MLB Reliever of the Month following a dominant performance where he secured 8 saves in 8 opportunities and recorded 28 strikeouts.

July 7, 2024: Selection to the 2024 MLB All-Star Game

On July 7, 2024, Mason Miller was officially named a reserve player for the 2024 Major League Baseball All-Star Game. This selection recognized his exceptional performance in the first half of the season, during which he maintained a 2.39 ERA, secured 14 saves, and led all American League relievers with 66 strikeouts.

September 26, 2024: Final Pitch at the Oakland Coliseum

On September 26, 2024, Mason Miller made history by throwing the final pitch at the Oakland Coliseum in a Major League Baseball game. He secured a 3-2 victory against the Texas Rangers, marking the franchise's final win in Oakland, while also setting a new team rookie record with his 28th save of the season and delivering the fastest pitch ever recorded at the stadium at 103.8 MPH.

2024: First All-Star Selection

During the 2024 season, Mason Miller earned his first selection to the MLB All-Star team in recognition of his performance as a pitcher.

2024: Successful 2024 MLB Season and Accolades

During the 2024 season, Mason Miller established himself as a dominant relief pitcher by finishing with a 2.49 ERA, 28 saves, and 104 strikeouts over 55 appearances. His performance in 2024 earned him a spot on the All-MLB Second Team and a fourth-place finish in the American League Rookie of the Year voting.

April 12, 2025: First Save at Sutter Health Park

On April 12, 2025, Mason Miller secured a significant milestone by recording the Oakland Athletics' inaugural save at their new home, Sutter Health Park in Sacramento. He achieved this by pitching a scoreless 9th inning, successfully closing out a 3–1 victory against the New York Mets.

May 17, 2025: Loss while with the Athletics

On May 17, 2025, Mason Miller recorded a pitching loss while playing for the Oakland Athletics, marking the last time he lost a game before his first loss as a member of the Padres in May 2026.

July 31, 2025: Trade to the San Diego Padres

On July 31, 2025, Mason Miller and JP Sears were traded by the Athletics to the San Diego Padres in a deal involving players Leo De Vries, Braden Nett, Eduarniel Núñez, and Henry Baez.

August 2025: Commencement of scoreless streak

In August 2025, Mason Miller began a historic streak of consecutive scoreless innings while pitching for the San Diego Padres, starting immediately after allowing a run in his second appearance for the team.

2025: 2025 Season Performance and Postseason Debut

During the 2025 season, Mason Miller recorded a 2.63 ERA, 22 saves, and 104 strikeouts while playing for both the Athletics and the Padres. Additionally, in 2025, he made his postseason debut during Game 1 of the National League Wild Card Series against the Chicago Cubs, where he struck out the side in the seventh inning despite the Cubs ultimately winning 3-1.

April 25, 2026: Record-breaking scoreless streak

On April 25, 2026, Mason Miller established a new San Diego Padres record for the most consecutive scoreless innings pitched by a relief pitcher, surpassing the previous record of 33 2/3 innings held by Cla Meredith since 2006.