The right tackle was taken in the second round of last month's draft, the 42nd player chosen overall, despite playing just 21 games in college for the Saddleback College Gauchos and the Florida State Seminoles.
With Khalif Barnes well established at Watson's end of the Raiders' line, the 24-year-old may have to wait for his chance.
But he said: "I'm not focusing on the depth chart and any of that stuff.
"My goal is to be ready when my name's called and that could happen at any time. When my opportunity comes I want to be assignment-perfect.
"I want to be someone everyone can rely on - (so that) from the head coach to my position coach, they're not worrying about me, I know what I've got to do and I'm doing it and helping the Raiders to win games."
Watson has spent this week at the team's first pre-season mini-camp and head coach Dennis Allen told the Raiders' website: "We're pleased with where he's at.
"Like all rookies, he does make his mistakes, but I wouldn't say he's out of place.
"He's no different from a lot of rookies but you do see the athletic skill, the physical talent he has."
Watson added: "Me and coach Allen have spoken a few times and it's pleasing to know that he's starting to have a bit of trust in me.
"When you play in the offensive line you've got to protect your team-mates from these monsters that are coming at you. It's important that the guy next to you knows he can rely on you.
"It's about being a physical presence, being a guy who's going to protect the quarterback and open up lanes for the running back."
Watson's blocking helped the FSU running attack to 40 touchdowns and an average 206 yards per game in 2012 and he will now hope to help out one of the NFL's most exciting backs in Darren McFadden.
"Yeah, he runs hard!" said Watson. "He's been working hard and he's in good shape."
Watson had been projected as a possible first-round draft pick and while he admitted he was disappointed for his family when he fell to the second, he added: "I can't complain.
"I'm in a great situation right now - who doesn't want to play for the Raiders?
"The reputation they've got, and the history, you see guys like (Hall of Fame cornerback) Willie Brown walking around - he's talking to you, he's in the weight room still lifting, so it's great.
"When I was coming in town, they lined up outside the training facility and camped out all day, it was incredible. Right there that showed me what type of fanbase we've got and how passionate they are."
Watson hopes his well-documented rags-to-riches rise can serve as an inspiration for others, and revealed he has already sent the bulk of his first pay packet home to help out his cash-strapped family.
"I bought myself a car, sent some money back home to my family and that was about it really," he said.
"I've set up a Twitter (account) and a lot of my followers are people from back home and it's amazing.
"I spoke to my mum and she's told me about it, it brings me joy to be that type of person and hopefully I can continue to inspire people."
And while he and his team are focused on the short term, Watson - who switched sports from basketball while in college - is aiming to continue his ascent to the very top.
"When I decided to play this game, I didn't want to be average," he said.
"That's why I switched, because in basketball I was coming to those terms and it was very hard. One of the hardest things to deal with was being average.
"When I switched over to football, I set myself goals. There's no pressure anyone can put on me that I haven't put on myself."