Grandmaster Lenderman’s chess career began in Brooklyn, New York when he was four years old. He began to learn the game of chess, and then, by the time he finished high school, he had lead his team to four straight national titles. In 2008, Lenderman used small victories throughout the US Chess Grand Prix to secure him the victory overall. He took first place again the following year. He also won the 2009 Atlantic Open and co-championed the 2019 US Open, as well.
Lenderman has continued to take championship after championship. He won the International Bavarian Chess Championship in 2014. In 2015, he was on the US team to the World Chess Team Championship where he took home a gold medal for the second board with a score of five out of seven. He also won the World Open that same year with a score of seven out of nine. Lenderman had a brilliant performance in the Isle of Man tournament in 2017, where he had a performance rating over 2750.