Saph

also called Sippai · A Giant, in the time of the United Monarchy · named in 2 verses

the name means Extension Easton's Bible Dictionary

Saph (or Sippai) was a Philistine giant who was killed by Sibbechai the Hushathite during a battle with the Philistines.

From Easton's Bible Dictionary

Extension, the son of the giant whom Sibbechai slew (2 Sam. 21:18); called also Sippai (1 Chr. 20:4).

Easton's Illustrated Bible Dictionary, 1897 — public domain, quoted in full and unedited.

Parents Rapha

From STEPBible's TIPNR genealogy data. A relationship the data marks uncertain is not shown here.

First named at 2 Samuel 21:18.

2 Samuel 21:18 Some time later at Gob, there was another battle with the Philistines. At that time Sibbecai the Hushathite killed Saph, a descendant of Rapha.
1 Chronicles 20:4 Some time later, war broke out with the Philistines at Gezer. At that time Sibbecai the Hushathite killed Sippai, a descendant of the Rephaim, and the Philistines were subdued.