Either NBC really is pushing MLS or they're tapping into Portland's sports scene in this clip from the most recent episode of Grimm, a supernatural drama set in Portland.
Having watched the series the fella in the Timbers hoodie had Beavers gear in his home (he's part rodent himself). There have been Timbers gear worn by others in previous episodes as well. This was the first time the team name was dropped by the actors.
BTW, because of the Boston manhunt that went into Friday night, this show has yet to air in the US. I believe, it was aired in other places outside the US, like Canada, therefore it is possible to still see this on TV this Friday.