From the ESPN Cubs message board:

This is great. Hitters stats against Estes in his last 8 starts:

.351 BA
.389 OBP
.571 SLP
.960 OPS

This stuff is too good to make up. In terms of OBP and Slugging, the player this most closely resembles is Jim Thome. When Estes has taken the hill in his last 8 starts, he makes the opposing lineup look like 9 Jim Thome's.

Even scarier is that Baker and Estes agree that Estes has had his good "stuff" in his last 4 outings. I don't care that Estes is a lefty. He's completely brutal.