Well, Young had much more promise than those two, but looks to have ended up in a similar place. Career-high 60 for Russell - Young's high is somewhere in the 70s, if I remember correctly. Good record in challengers, occasional wins in the big leagues. Russell had his one moment of glory.
Bastl also topped out in the 70s, had a few years in the roughly 100s. Young is better than that I think.
Paul Goldstein is another guy of that similar level. Lots of success in challengers, mostly losses in the main draw.
I wasn't thinking of hats at all. I was thinking of players who topped out with rankings just above 100. At that level, you're winning lots of challengers but not winning many main draw matches.