Antonyms for "evened up" could include terms such as "imbalance," "uneven," "lopsided," or "unequal." Instead of referring to something that has been brought into balance, these terms imply a disparity or lack of alignment. For example, an invoice that has not been "evened up" might be described as "unbalanced" or "out of order." Similarly, a race in which one competitor wins by a significant margin could be said to be "lopsided" rather than "evened up." In each case, the antonyms shift the emphasis from leveling the playing field to highlighting discrepancies or discrepancies.