The Arizona St. Sun Devils have very little margin for error the remainder of the season if they want to work their way back into the Pac-12 title game picture. Currently ASU is tied with UCLA in the conference standings, but the Sun Devils have already lost the head-to-head matchup with the Bruins, and thus need to hope for UCLA to lose in the upcoming weeks.
UCLA has two tough road contests upcoming against Utah and (especially) USC. Neither of these games are expected to be gimmes by any means, so the Sun Devils probably should feel fairly comfortable with their hopes of capturing the South.
ASU has the Washington St. Cougars this week, so this is pretty much a game they should and must win if they really want any shot. After that they have Arizona in their rivalry matchup (a game in which the Sun Devils should be heavily favored) and then they match up with Cal. All of these games are winnable ones where the Devils should be favored. The Sun Devils should still be considered the favorites to win the South at this point.