replaceAll(replaceAll(prop("Played By"), "(\b\S+\b)(?=.*\1)", ""), ",", "\n")
replaceAll(replaceAll(prop("Games Played"), "(\b\S+\b)(?=.*\1)", ""), ",", "\n")
These regex patterns only work the first time they're saved as extra \s are added that cause the formulas to fail the next time they're edited.
(\b\S+\b)(?=.*\1) becomes (\b\\S+\b)(?=.*\\1) → removing the extra \s before S and 1 allows the formulas to work again.