When Wells returns, Bochy is going to have to decide between Germano vs. Tankersley to fill Peavy's spot. I think they have to go with the Tank if he pitches another good game against the Brewers this week.
He had 9K, .83 Whip, and 0 ER in 6IP pitched against the Brew this weekend, so he definately got people's attention. His next I believe is against the Brewers again, so he'll no longer have the element of suprise that he may have had Saturday
I like him more than Germano right now. He's a gamble, but the payoff would be big if he succeeds.
I would grab him in NL only leagues and possibly stashing him on your bench in deep mixed leagues, if your in need of SP, and see how things play out in San Diego over the next couple weeks. Not for shallow mixed leagues at this point