We found a volunteer tomato plant in our planter box last month. The last time I planted tomatoes was well over 2 yrs ago, so I have no idea what kind of tomato this was. Then Little Man pointed out the 'tennis ball'- which turned out to be a yellow tomato! I remember planting these at some point, but I can't remember the name. Oh well- we'll let this one ripen and then we'll try it (if the bugs don't get to it first).