Garden Spider

 We have three small tomato plants in a large pot on our doorstep and there aren't any more tomatoes growing on the plant right now but we did find a new addition to our garden today.

Eat those bugs, Spidey! This same kind of spider makes an appearance around our door every year, but the first year one was in our door frame! Too close for comfort--so we moved it with a stick. Then there was a large web the next year under some decking. But I feel honored to have grown a plant worthy of hosting a small growing spider.  I hope it sticks around and eats lots of mosquitoes! And I was wondering if what appears to be a ball at the base of the spider (which is actually at the top in the pic cause its hanging upside-down), is an egg sack... If so, will it get bigger? Will I be able to see babies?
Questions without answers.