EDEN PRAIRIE, Minn. (AP) — The Minnesota Vikings made all kinds of changes to their offense this season, from new linemen to new blocking strategies to a new backup quarterback. One of the biggest goals was to establish more balance, both in terms of run-pass ratios and the ability to complete throws at a variety of distances, and one of the ways they've done so this year has been with the effective use of the screen pass. For all the new-age concepts and schemes that have come to the NFL, these old-fashioned plays still have an important place. "I wanted to get better at screens, because I know how difficult it is to defend," coach Mike Zimmer said.