Marcelo is one of the most important players in Real Madrid's history. He has played for the club since he was just a teenager and has become one of their most reliable defenders over the years. Marcelo has made several key performances throughout his time at Real Madrid, some of which include:

1. The Champions League Final: In the 2014 Champions League final against Atletico Madrid, Marcelo scored the only goal of the match to help Real Madrid win their fifth European Cup. This performance was crucial in securing the club's first league title in 18 years.

2. The La Liga Title: Marcelo played a key role in helping Real Madrid secure the La Liga title in 2016-17. He was instrumental in the team's defense and helped keep them at the top of the table all season long.

3. The Copa del Rey Win: In the 2017 Copa del Rey final, Marcelo was named man of the match after scoring the winning goal in extra-time. This victory secured Real Madrid's place in the UEFA Europa League.

4. The UCL Quarterfinals: Marcelo played a pivotal role in Real Madrid's run to the quarter-finals of the UEFA Champions League in 2019-20. His defensive work helped prevent opponents from finding space behind him, allowing his teammates to attack more freely.

Overall, Marcelo has been a key player for Real Madrid throughout his career. His performances have helped the club achieve numerous successes on the pitch and off it. As he approaches the end of his career, it will be interesting to see how he continues to perform and contribute to the team.