Alternate explanation possible

Archeologists digging in southern Israel, near the old Philistine city of Gath, have come up with shards of pottery that bear the inscription "Goliath."

Without the quote marks, probably.

... a find they claimed lends historical credence to the Bible's tale of David's battle with the giant.
While the discovery is not definitive evidence of Goliath's existence, it does support the Bible's depiction of life at the time the battle was supposed to have occurred, said Dr. Aren Maeir, a professor at Bar-Ilan University and director of the excavation.

Some scholars assert the story of David slaying the giant Goliath is a myth written down hundreds of years later. Maeir said finding the scraps lends historical credence to the biblical story.

The shard dates back to around 950 B.C., within 70 years of when biblical chronology asserts David squared off against Goliath, making it the oldest Philistine inscription ever found, the archaeologists said.

Of course, there could be an entirely logical alternate explanation.

Our archeological investigations into the claim, using exclusively reinvented Tesla technology and two large Earth batteries of platinum and gold, wired through a new anti-gravity device and cross-circuited to Selector B on our old recording console, with a patch through our old 386 computer, reveals the startling discovery that the over-sized pottery did indeed belong to ...

GOLIATH, Philistine wonder dog.