Knobbie and Carew's OBP were almost identical...I never really saw Carew play but Chuckie could get to it and pick among the best during his days in the Baggy Dome.
So if you saying the Twins best 2B by including DEF and OFF then it should be close, IMO.
But if it's hitting, Carew has the edge.
But didn't Carew also play 1B?
"After my fourth season I asked for $43,000 and General Manager Ed Barrow told me, 'Young man, do you realize Lou Gehrig, a 16-year-man, is playing for only $44,000?' I said, Mr. Barrow, there is only one answer to that - Mr. Gehrig is terribly underpaid."- Yankees outfielder Joe DiMaggio