Can we draw the following hypothesis from the context?

Context:

Charles Rashad Jamaal Brown (born April 10, 1987) is a former American football offensive tackle in the National Football League (NFL) for the New Orleans Saints, New York Giants and Dallas Cowboys. He played college football at USC, where he won the Morris Trophy, recognizing the best offensive and defensive linemen on the West Coast in 2009.

Hypothesis: Brown played seven seasons in the NFL.
It's impossible to say