In his 15-minute Oval Office address about terrorism Sunday, President Barack Obama encouraged Americans not to discriminate against Muslims in the fight against extremists, saying Muslims are our "friends and our neighbors, our co-workers, our sports heroes." Donald Trump challenged that statement in a classic Trump-style tweet on Monday. 

"What sport is he talking about, and who?" Trump said in his tweet, also suggesting the president was "profiling." Trump's comment sparked a rapid response from Twitter users, who reminded him of some of the most famous Muslim athletes, some even tweeting photos of Trump himself posing with some of them. 

Here are five Muslim "sports heroes" that Donald Trump's tweet suggests he forgot exist:

Muhammad Ali: After becoming one of the most legendary boxers of all time, Ali, 73, has dedicated himself to philanthropy since retirement and his 1984 Parkinson's disease diagnosis.