Editor's note: This is the final part in a series that spotlights three 49ers-Jaguars matchups to watch Sunday, 10 a.m., at Wembley Stadium in London.
The difficult part is over for the 49ers after reaching the one-quarter point of the season with a 2-2 record.
Editor's note: The 49ers are 2-2 after the first quarter of the season. And there are plenty of questions on both sides of the ball.
Programming note: Watch today's 49ers press conference with head coach Jim Harbaugh today at 2 p.m.