"That's part of the reason Rex drafted me, because I value this job. It's my life. If somebody wanted to take that away from me, it's personal"

Mark Sanchez is referring to the truth that he was composed by the Rex team which he values his work as a specialist football player. He is saying that if someone were to eliminate his job, it would be a personal assault on him. He is emphasizing the importance of his task to him as well as how much it indicates to him. He is expressing his dedication to the group and his commitment to the sporting activity. He is also showing his gratitude for the chance to play professional football and how much it means to him. He is sharing his interest for the game and his need to be successful. He is demonstrating his dedication to the team as well as his desire to do whatever it takes to be effective.