Simplify the following text for a Grade 9 native English-speaking person.
Original: While at Langston , he once dribbled out the clock in a conference tournament game to ridicule an opponent , Southern University , which had just run up the score against an inferior team ( Sam Huston College , later Huston-Tillotson University ) , which incidentally , was coached by a young Jackie Robinson .
Simplified: While at Langston , he once dribbled out the clock in a conference tournament game to taunt an opponent , Southern University . Southern had just run up the score against a weaker team ( Sam Huston College , later Huston-Tillotson University ) .