The Knockout is a 1925 American silent drama film directed by Lambert Hillyer and starring Milton Sills.

Because he thinks the arm useless, he accepts the offer of the lumberman Parker to become his manager in a Canadian lumber camp.

Donlin accepts because he has just met and fallen in love with Jean Farot, daughter of Parker’s rival.

Jean loses faith in Donlin’s love because she thinks he is in the plot against her father, who is in Parker’s debt.

Donlin goes to New York, wins another championship fight, pays Farot’s debt, and permanently establishes himself in Jean’s favor.