SAN FRANCISCO (Bleacher Report) -- With the San Francisco Giants' season on the line in the decisive Game 5 of their NLDS with the Cincinnati Reds, Matt Cain pitched—well, he pitched a pretty good game.

In 5.2 innings, the Giants' No. 1 starter allowed three runs and six hits. It wasn't even a quality start for Cain, if that's a statistic you buy into. But, the effort was good enough for Cain to earn the win, thanks largely to Buster Posey's fifth-inning grand slam.

But is "good enough" from Cain enough for the Giants to win the NLCS and the World Series? Is that the best to be expected from him while facing the best competition during the postseason? Or, should San Francisco be concerned that their No. 1 starter doesn't have the look of an ace as the team goes into its next playoff series?

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