Who Would You Rather Have In A 1-Run Game?

Joba Chamberlain w/ runners on base this season: 5.07 FIP, .345 wOBA against
David Robertson w/ runners on base this season: 2.33 FIP, .212 wOBA against

Joba w/ RISP: 5.38 FIP, .386 wOBA against
D-Rob w/ RISP: 1.57 FIP, .173 wOBA against

Joba in high leverage spots: 6.41 FIP/.397 wOBA in 2.2 IP
D-Rob in high leverage spots: 2.13 FIP/.190 wOBA in 17.2 IP

I love ya, Joe.  But I don't know what the hell you were thinking in the 7th yesterday.  There's no justification for bringing Joba into any close game anymore.  Not when every win counts.