The 37-year-old Chargers quarterback did not put on a great display as the Chargers beat the Baltimore Ravens 23-17 on the road.
Rivers finished the Wild Card game with 160 passing yards and no touchdowns after making 22 of his 32 attempts.
The Chargers now face another road game when they travel to New England to take on the Tom Brady and his Patriots in the AFC Divisional Round next Sunday.
And Rivers admits it is going to be difficult.
“We got to get better, no question,” Rivers said.
“We know the task ahead of us next week, it is going to be tough.
“This team is in this round every year, we know that and we gotta go to their place.
“It’s a Bill Belichick led team and defence that we know.
“They are used to these types of games, so it will be a heck of a challenge.”
Although comparisons will be made between both quarterbacks, Rivers insists he is not going up against Tom Brady.
“I got to focus on the defence,” Rivers said.
“I am not playing Tom by any means.
“But is it special to go to New England against a hall of fame coach and arguably the best quarterback ever to play and get another shot at them, heck yeah.
In their win over the Ravens the Chargers were dominating until a late fourth quarter surge by Baltimore.
The Chargers led 23-3 before the Ravens scored two fourth-quarter touchdowns and had a chance to take the lead.
Baltimore got the ball at their 34 with 45 seconds left after a punt, but Uchenna Nwosu knocked the ball out of Jackson’s hand with the Ravens near midfield and the Chargers recovered.
But now Rivers focus is on the Patriots.
“Gosh, we know the run they’ve had, it seems like forever that they’re always in these games and games beyond,” Rivers said.
“We find so many different ways to win. The defence was unbelievable today. We couldn’t get in the end zone – we finally did.
“This team, we’re going to fly back home, then we’re going to fly back out here for another 10 am West Coast kick.
“We really don’t care, we’ll be there next Sunday.”