SAN FRANCISCO — On Monday, Christian Arroyo made his MLB debut. Tuesday brought his first hit and on Wednesday it was the first homer. Thursday's game was his first multi-hit game as a big leaguer. What was in store Friday? The best swing yet.Arroyo hit a go-ahead shot to left while leading off the eighth, giving the Giants a 4-3 win in their series opener with the Padres. The player coaches simply call "The Kid" has two homers in his first five games, and both have come in huge spots. Friday's sent another jolt through AT&T Park and got a lead to Mark Melancon, who closed out the Padres. Standoff With Walnut Creek Homicide Suspect Ends in Arrest For four innings, a long-haired right-hander was no-hitting the Padres. Jeff Samardzija was sharp early and he got a nice cushion in the first. Joe Panik and Brandon Belt led off with singles and Panik scored on Erick Aybar's two-out error. A Conor Gillaspie knock made it 2-0.The first hit allowed by Samardzija was a painful one. He plunked Yangervis Solarte to open the fifth and Ryan Schimpf hit a long dinger to dead center to tie the game. Cory Spangenberg followed with a single to left that skipped under Belt's glove....