Can someone who plays ALTA and USTA tell me what USTA rating A-1 is comparable to?
Reason I ask is because the team I was on last season was AA and I ended up playing a 4.5 and 5.0 USTA rated players.I'm sure there are reams of threads on this topic -- the correct answer is that it's not really comparable. There are far too many variables not the least of which is that an ALTA team typically has significant variation by line whereas a USTA team is technically equivalent (i.e., all 4.0 players) and even in reality though there is variation, it's just not nearly as much as an ALTA team.
However, since you just want the shortcut version anyway I would say that's in the ballpark anyway of 4.5+ because even though A-1 line 1 is easily a 5.0+ while A-1 line 5 could possibly be as low as a 4.0 but probably more like a 4.5.
FWIW, I got bumped to 4.0 USTA (technically 15 months ago but appealed since I was so close and then got bumped again 3 months ago) and play successfully at the very bottom of an A-7 mixed team and literally the bottom (line 5) of an A-5 men's team. Our top guys are 4.5-5.0 on the A-5 team.