Yes, the railings in front of Row 1 seats obstruct the view of the field. It depends on which section you are referring to in order to determine how extreme the obstruction is, but all sections have a railing in front of Row 1, making it more difficult to see than normal. It would be a good idea to sit a few rows back in any section of Qualcomm Stadium because then you will easily be able to see over the railing.