[drew54]

I cannot stand the whole Gibb's fiasco that happens every now and then.

WikiAnswers - What is the possessive case for words ending in s

Form the singular possessive of nouns ending in s with 's: Mr. Jones's dog, Maris's foibles, James's dissertation. The only exceptions are ancient proper nouns: Jesus' disciples.

However, you form the plural possessive of nouns by adding an apostrophe after the "s": the dogs' bones, the balloons' strings, the lollipops' centers.

In the case of the plural possessive of nouns ending in s -- as in, say, the family Jones and their collective beach house -- you add an es and an apostrophe at the end: the Joneses' beach house, the Moraleses' car.

So it is Joe Gibbs. Joe Gibbs's teams won the game. The Gibbses' are currently running a Nascar team.