Why do I blunder part 4 LOL - Tournament Pairings - Chess.com

Group 1		1	2	3	4
1	Clive503 (1438)		1 1	1 ½	1 1	5.5	11.5
2	Uli13-inactive (1273)	0 0		½ 1	1 1	3.5	4.5
3	GordonGuide (1427)	½ 0	0 ½		1 1	3	4.5
4	LuisClaudio1234 (1627)	0 0	0 0	0 0		0	0