"It was too easy and I took my eye off the ball a little bit.
The fight came alive in the third when Whittaker landed a right hook from the clinch before another shot skimmed Wallace's forehead and briefly staggered him.
Wallace hurt him with a thudding southpaw left before Whittaker walked on to a huge shot and looked in serious trouble.
Uddin closed the show in the ninth with a heavy right.
Related topics Boxing 7 September 28 April 2024 More boxing from the BBC 28 August.