Lime
“Burns due to lime, although well reported as a result of occupational exposure, are uncommon in the sports arena.”
However, researchers from Morriston Hospital, Swansea, in Wales, do report at least one such case. A lime-induced chemical burn, severe enough to require minor surgery in a football goalkeeper. (Note: Lime as in calcium oxide, not the fruit – though raw lime juice can also induce mild burn-like reactions in sensitive individuals who are exposed to strong sunlight.)