Walker Zimmerman is a pillar of defensive strength for both Toronto FC and the United States Men's National Team, established as one of the premier center-backs in Major League Soccer. Born on May 19, 1993, the 32-year-old defender is a commanding 191 cm tall and uses his physicality and aerial dominance to great effect. His professional journey started when FC Dallas selected him in the 2013 MLS SuperDraft. He developed into a starter in Dallas, earning his first MLS Best XI honor in 2017. A transformative trade sent him to Nashville SC in 2020, where he became the franchise cornerstone and captain, leading the expansion side to immediate playoff success and winning the MLS Defender of the Year award in back-to-back seasons (2020 and 2021). His performances earned him a regular spot with the USMNT, where he was a key figure in the 2022 FIFA World Cup qualifying campaign. In 2023, he made a high-profile move to Toronto FC. His honors include two MLS Defender of the Year awards and multiple MLS Best XI selections. Known for his leadership, relentless defending, and threat on set-pieces, Walker Zimmerman remains the gold standard for American defenders.