Adam Grossman is a naval engineer, originally e competitive sprinter from Baltimore, Maryland.

Adam first tried out during the 3rd season of American Ninja Warrior in Venice Beach. There, he made it to the Warped Wall, but could not make it up in his three attempts.

In American Ninja Warrior 4, Adam competed in the South East region in Miami. He completed both the qualifying and finals course there finishing 12th overall. In the finals in Las Vegas, Adam made an early exit after failing on the Giant Swing.

In American Ninja Warrior 5, Adam competed in his hometown of Baltimore. He finished the qualifying course there, but fell on the Body Prop in the finals. However, this was good enough for a 13th place finish to qualify for the finals in Las Vegas for a second time. During the finals, Adam was the first to clear the Jumping Spider, which had taken out over 40% of the competitors (included several top athletes). Adam was making good time, but slipped on the third ball of the Spin Bridge and fell into the water.

In American Ninja Warrior 6, he competed in Miami again. He was able to clear the Qualifying Course and became one the Top 42 finishers. In the City Finals, he made it past the first 8 obstacles and struggled on the last 2, but was able to clear the course. In Vegas, he surprisingly failed the Jumping Spider, where he cleared last year.

In American Ninja Warrior 7, he competed in Pittsburgh and cleared the Qualifying Course. In the Finals, he cleared the first 7 obstacles, but went out on the Monkey Bars. But made it to Vegas for a 4th straight year. In Vegas, he run was cut, but he failed the Coin Flip.

After a one year absence, Adam returned in American Ninja Warrior 9 for Daytona, while his run was cut, it was known that he failed on the Wingnuts.

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