The "right back" that Adams played for the USMNT is not the "RB" of your prototypically-typical 4-4-2 formation discussion. Whether that's good or bad, whether it's best for him/us or not, it's not very instructive to think of how Adams played RB as analogous to how, say, DY or Frankie Heydude plays RB. Fabio's inverted RB runs under Klinsi are close, but still not the same as Fabio was still wing-back-ish in mentality. Adams was more a "false RB/Holding midfielder" - playing it similarly, ironically, to how JOB played LB for Ajax - a "QB" LB - although Adams got forward more. So it's not really helpful imho opinion to simply call it a USMNT-style RB.