16. Jordan Zimmermann

Jordan Zimmermann's rise in Washington mirrored the franchise’s transformation from an NL East afterthought to a powerhouse. Drafted in 2007 from Division III Wisconsin-Stevens Point, he needed little development. With a fierce competitive edge and a clean, high-velocity three-pitch repertoire, he bypassed minors to secure a spot in the 2009 rotation, establishing himself as a workhorse of the District's pitching staff.

Zimmermann’s early seasons showcased exceptional athletic resilience. After a promising rookie debut was abruptly halted by a torn UCL, necessitating Tommy John surgery, he managed a technically perfect recovery. In 2011, he returned with a remarkable 3.18 ERA. The following year, he demonstrated remarkable durability, pitching 195.2 innings with a 2.94 ERA, assisting Washington in winning its first-ever National League East division title.

Zimmermann reached the peak of his career with a remarkable 2013 season. He overwhelmed National League hitters with a powerful 92-95 mph four-seam fastball, a sharp slider he called his "baby cutter," and a looping 12-to-6 curveball. This diverse arsenal helped him record a 19–9 win-loss record, lead the league in victories and shutouts (2), and maintain a solid 3.25 ERA. These achievements earned him his first All-Star selection and a seventh-place finish in NL Cy Young voting.

Far from done, he crafted an exceptional personal masterpiece during a remarkable 2014 season, lowering his ERA to a career-low 2.66 and earning his second consecutive All-Star selection. He cemented his legacy in District sports history on the final day of that season by throwing a historic, stunning 104-pitch no-hitter against the Miami Marlins—the first no-hitter in modern Nationals history. This outstanding summer season also earned him a fifth-place finish in the AL Cy Young voting.

After a durable 2015 summer in which he pitched 200 innings, the highly sought-after free agent left the capital city to sign a large multi-year deal with the Detroit Tigers. Despite injuries and physical decline affecting his later years in the American League, his seven seasons in Washington stand as a prime example of consistent frontline performance.

Because he shared the marquee with high-profile aces like Stephen Strasburg and Max Scherzer, his clinical efficiency could occasionally be underrated on the national stage. Yet, as a National, Zimmermann has a stellar 70–50 record, 903 strikeouts, and a 3.32 ERA.