Belt's slam drives Giants past D-backs

Brandon Belt hit a grand slam, Kevin Pillar had a career-high five hits and Logan Webb won his major league debut as the San Francisco Giants cruised past the Arizona Diamondbacks 11-6 on Saturday night in Phoenix. Belt connected off Taylor Clarke (4-4) as part of a five-run second inning. He also had an RBI single in the third and a run-scoring groundout in the eighth to match his career-high with six RBIs.

A night after hitting two home runs, Pillar singled four times and doubled. He scored three times and drove in a run. Mike Yastrzemski singled three times a night after belting three home runs. Belt, Stephen Vogt, Scooter Gennett and Austin Slater each added two of San Francisco's 18 hits -- 16 of which were singles.

Wilmer Flores led the D-backs' attack with four hits, while Christian Walker and Nick Ahmed hit home runs. Catcher Alex Avila pitched in relief for the second time in a week, striking out one in a 1-2-3 ninth. Webb (1-0) allowed two runs (one earned) on five hits in five innings, striking out seven and walking one.

The 22-year-old right-hander, pitching in only his second game above Double-A, was in immediate trouble, giving up a single to leadoff hitter Jarrod Dyson and an RBI double to Flores one batter later. Flores made it 2-0 when he came around to score on a throwing error. Webb settled down from there, keeping Arizona off-balance with his off-speed pitches complementing a mid-90s fastball.

Clarke needed only 11 pitches in a 1-2-3 first inning, but he couldn't get out of the second. The Giants' first five batters of the second inning reached base. Alex Dickerson walked, Gennett reached on a fielder's-choice throwing error after a 12-pitch at-bat, Pillar singled to load the bases and Belt cleared them by driving a 1-1 pitch over the right-field wall.

Clarke threw 42 pitches in the inning before being lifted with two outs. The game ended when Eduardo Escobar was thrown out at third trying to stretch a double.

Arizona All-Star Ketel Marte was scratched from the lineup because of back tightness, although the team said he was expected to start Sunday as the D-backs try to avoid a four-game sweep.