Javier Lopez, Giants: Its been a productive week for Lopez, as he's collected three saves and a hold during his previous four outings. Sergio Romo looms, as does Jeremy Affeldt, but Lopez looks to be the hot hand and name to own in the San Francisco pen.
John Axford, Brewers: The Axman appears to have worked his way back into ninth inning duties, picking up two saves last week. He faltered in his most recent outing against the Pirates, giving way to Kameron Loe, who collected his second save of the season. While Axford should continue seeing chances moving forward, he's very risky.
Wilton Lopez, Astros: Closers on bad teams are always low ceiling, especially when they are relatively new to the role, like Lopez is with the Astros. He's been up and down this month, going 2-2 with two saves in three opportunities. He's pitched very well this year (2.31 ERA, 0.99 WHIP, 465 KBB), and looks to be building momentum heading into next year, which should start with him as Houstons closer.
Andrew Bailey, Red Sox: Andrew Bailey gets a save opportunity. As a result, Alfredo Aceves throws a tantrum, and is suspended for three games. The writing is on the wall here, and in bold letters it says 'Add Bailey Now. There is a strong chance he finishes the year as the closer, and heads into '13 with the job securely in hand (good healthy provided).
Glen Perkins, Twins: Perkins picked up another save on Sunday, and now has three during the month of August. He still shares chances with Jared Burton, but as long has he's collecting handshakes, he has value in all fantasy formats.