I keep hitting the stupid enter key and submitting before I'm done... sorry.

Anyway...2 errors in 76 INN is 1 error every 36 INN.

He's made 10 errors in 277 INN for you or 1 in every 27.7 innings.

1 in 36 vs 1 in 27.7 - not that different.

I'd say he's likely to keep making errors at that pace if you keep playing him in RIGHT FIELD.