Backcourters are at something of a disadvantage in Singles,
for a couple of reasons.
Primary, I believe, is the fact that they never have to serve, except in Singles. And, then, their larger cestas make the putaways more difficult.
Also (and I mean no disrespect here), they tend to be bigger and slower, with less range than the fronts.
But, of all the backs you've known, who do you think was the best Singles player?