Fantasy Impact - Janssen is a great closer but he only ranked 14th on ESPN's player rater for closers in 2013. His mediocre strikeout rate and less chance for saves make him just a "good" closer in fantasy terms. Don't be mistaken though, Janssen is a must-own in all leagues and is firmly locked in as a solid closer.
Predictions - 4-1, 56 IP, 42 H, 16 ER, 15 BB, 60 K (2.57 ERA, 1.02 WHIP)
For more info on the Janssen option see: http://jaysjournal.com/2013/10/31/toronto-blue-jays-pick-options-casey-janssen-adam-lind-mark-derosa-decline-munenori-kawasaki-news-rumors/
Image citations in order of page: http://sports.nationalpost.com/2013/02/26/blue-jays-casey-janssen-says-hes-ready-for-his-brainwashing/