Everyone has one. 

If some schmuck comes up and calls you out on being a band-wagon fan, you come out and say

"Oh yeah? Would a band-wagon fan know why ______ is so important?"

No. They wouldn't. But you do, because you're real, and you've been following the Giants since you were born. And you were flying back to San Francisco during the earthquake when you were 6 months old so you had to land in San Diego and throw your dirty diaper on Mrs. Latos' porch, forever scarring that two-year-old Mat Latos into hating San Francisco forever.

Because you know that Ruben Rivera is the worst baserunner on the face of the planet. And that Bill Mueller was a Giant before he won the Silver Slugger (WHY) and batting title with the Red Sox. And that there is no explicable statistical reason that Felix Rodriguez went 9-1 with a 1.68 ERA in 2001 (OUTLIERS!).

Because you know that the Giants went through a phase of picking up players that the Indians threw away (Joe Carter, Ellis Burks, Orel Hershiser, Julian Tavarez, Omar Vizquel) and that most of them ended up producing. 

I've got a couple. I'll usually go with J.R. Philips, for some reason. Probably because he was part of the bridge between Will Clark and J.T. Snow. 

If someone counters with Brian Dallimore, I'll go to the bullpen, bringing up that awesome late-inning rotation of John Johnstone, Rich Rodriguez, Doug Creek, Doug Henry, and Jim Poole that led up to Rod Beck closing it out. in the late 90s. 

Who's your go-to guy? And what's one thing that they did that you can actually remember? It's the only way to prove you're really a Giants fan, by the way.