He's shown glimpses but there's been plenty of times this year he's held the ball way too long and been sacked.
About half way through the Charger game, Dan Fouts said Ryan Tannehill has excellent pocket awaresness. Just in case you don't think Dan Fouts knows it when he sees it, here are his accomplishments in the NFL:
Career history
San Diego Chargers (1973–1987)
Career highlights and awards
6× Pro Bowl (1979, 1980, 1981, 1982, 1983, 1985)
2× First-team All-Pro (1979, 1982)
2× Second-team All-Pro (1980, 1985)
Pro Bowl Co-MVP (1982)
NFL MVP (PFWA, NEA, 1982)
NFL Offensive Player of the Year (AP, PW, 1982)
2× UPI AFC Player of the Year (1979, 1982)
San Diego Chargers #14 retired
San Diego Chargers Hall of Fame
San Diego Chargers 40th Anniversary Team
San Diego Chargers 50th Anniversary Team
NFL 1980s All-Decade Team
Pro Football Hall of Fame (1993)
As far as I am concerned, that puts the entire question of Ryan Tannehill's pocket awareness to bed.