By Jeremy Kahn

SAN FRANCISCO-After a great road trip that saw the San Francisco Giants go 4-2, the defending World Champions returned home and their losing ways at home continue.

Allen Webster was dominant, as he threw five innings of no-hit ball, before allowing a double to Joe Panik in the bottom of the sixth inning and the Arizona Diamondbacks defeated the Giants 4-2 before 42,006, the 359th consecutive sellout at AT&T Park.

Making his Diamondbacks debut, Webster went 5.2 innings, allowing two runs on two hits, while walking three and striking out two.

The Giants have now lost seven in a row at home, their longest losing streak at home since losing seven in a row from May 14-31, 2008.

It was a tough outing for Ryan Vogelsong, who gave up three runs in the first inning, before being relieved after just 3.2 innings, where he allowed four runs on six hits, walking five and striking out one.

Vogelsong got the first two batters of the first out, but Paul Goldschmidt began a streak where six consecutive Diamondbacks reached base via a walk or a single. The nightmarish inning came to a close when Vogelsong got Webster to flyout to Angel Pagan in centerfield to end the 39-pitch first.

After Vogelsong was lifted in favor of Yusmeiro Petit, the bullpen of Petit, Mike Broadway, who made his major league debut, Jeremy Affeldt and George Kontos was lights out, as they allowed just one hit over the final five and one-thirds of the game.

Buster Posey extended his hitting streak up to eight straight, and is batting .353 with seven RBIs during the streak.

Asides from Broadway making his major league debut, Jarrett Parker made his major league debut in right field and went 0-for-3. Broadway gave up a hit and struck out a batter in his only inning of work.