I totally agree on Reed Sorenson... He was with Turner last year in 3rd in points and he gets booted... He shows he can do it just he cant get the ride to do it in... hes been at Ganassi and Petty in cup 2 teams that arnt the greatest
what about Johanna Long?
Reed Sorenson Ganassi
David Gilliland Yates
JJ Yeley Gibbs
Elliott Sadler Yates/Evernham (When they were good)
Scott Speed RBR
Brendan Gaughan Penske
Brian Vickers Hendrick, RBR
Michael McDowell MWR, although the team was young at the time IIRC
Casey Mears Ganassi, Hendrick, RCR
Scott Riggs Evernham
Travis Kvapil Penske
And another that no one has mentioned, in my opinion, would be Dario Franchitti. I know he's doing awesome in IndyCar and has no reason to ever come back to NASCAR, but he did well in Nationwide, and had potential to do really well in Cup.
To be fair, though, if he really wanted to be back in NASCAR, he would have had a ride by now. If I was in his shoes, I'd also take nearly having 5 consecutive IndyCar titles over running mid-pack in stock cars.